But have not found the culprit. CrazyIan: Factory 2. i'm working on a 78 280z for a buddy had a bad fuel pump so i replaced the pump now i have plenty of pressure but no injector pulse it does have spark and runs excellent on starting fluid. Unclip the plug wire from the coil, and just lay the wire on top of the coil tower. This is in my 69 Camaro with AAW Classic Update harness. 1987 - 1996 F150 & Larger F-Series Trucks - No fuel injector pulse - Hello everyone. The car has a new crank sensor recently installed ran well for a while and now has no injector pulse. I have fuel pressure at the rail, fp works, I have spark. no injector pulse. I'm running out of ideas and hoping you guys and gals can help. Fuel pressure good. This could cause no spark or fuel. The shop found the ignition key body was broken and NATS (Nissan Anti-Theft System) immobilizer codes P1610 and P1614. 1 v6 automatic 4 door. Injectors have 12v to yell/blk wire but no negative pulse from ecm. Typical No Spark, No fuel thread here. if the noid light is flashing you have injector pulsesince you have that AND spark that rules out crank sensor. Like some service manuals suggest, "replace with known good component" This is kind of a field test. How to test a fuel injector circuit with basic tools (open control wire) How to Diagnose the failed injector and test Its Connectors using a 12 volt test light NO START,NO INJECTOR PULSE Thanks Paul Danner. 0L Turbo Powertrain (EJ Series Factory 2. bith of which are known for going bad on 5. ive checked all sensors with the help of helms ,have spark have fuel pressure ,timing right on ,we have 12 volts to same color wires on all injectors but no ground pulse so i back probed the wires coming out of ecu to injectors and they have battery voltag instead of ground i guess i need to ask. no injector pulse?? - i have a 1995 f150 with 4. if have spark trouble shoot injection. 0's the TFI was mounted to the dizzy, but on the 94/95 5. The Injector 12v SHOULD be fed from a fuse in the fuse block, might be the same fuse that feeds the 12v to the coil/ ICM (hence no injector pulse with noid lite or spark) I take it it didnt fire up with the carb cleaner either?. So I went in and tested the pins directly at the ecu by probing The injector output pins 51,52,60, and 61. Revised 27-Jan-2008 to include expanded testing for proper power to injector wiring Tools needed: Noid light, Multimeter (volts & ohms), 10 MM socket &. I have tested every wire and went through the vortex Buick no start tree. I tested the ignition coil and found that it was bad and replaced it. Similar Threads - injector pulse spark Forum Date; No spark or injector pulse: 4th Gen Camaro LT1 (1993-1997 Camaro) Aug 26, 2007: Injector pulse width: 4th Gen Camaro LT1 (1993-1997 Camaro) Jun 17, 2017: Planning on doing the LT4 hot cam and have a injector question: 4th Gen Camaro LT1 (1993-1997 Camaro) Dec 3, 2017. When I hooked up my code reader, got this fault code:. Plasma arc torch with coaxial wire feed. The below simply applies logic to the No Start troubleshooting trees and can save you a lot of time. I can't get the injector to spray fuel. The procedures shown in this video can be applied to all cars! First we test for spark, then injector pulse before finally focusing on the fuel pump and related circuitry. My friend has my hp tuners, so I won't be able to scan it until tomorrow. 2nd Gen Ram Tech - 2000 ram 1500 Has spark but no injector pulse wont start - I have a 2000 ram 1500 with the 5. Wait a minute on the ground side of the injector I get no light at all. As I mentioned I checked the trigger points and they appear to open and close that part of the circuit. When an engine needs to make more power—to accelerate onto a highway, for example—the onboard computer increases the pulse width of the fuel injectors to deliver more fuel. ohh, Jun 24, 2010. only problem i could find was the fuel pump runs always with key-on. A plasma arc welding apparatus having a coaxial wire feed. 0t TSI Bosch Fuel Injector. The next step is to make sure that you do have fuel pressure with a fuel pressure gauge just to make sure the fuel pump is not a secondary issue. I trust you used a noid light or led test light to check for injector pulse. 4 No star ,No injector pulse,good spark using your pull down by pass test, as Dora the Explorer says, I couldn. 91 Chevy 305 tbi no spark no injector pulse My truck was going down the road and just died on mei cranked it over a few times it fired and drove for about 400 yards and died again. SOURCE: Little to no injector pulse only when starter is engaged 95-97 M aximas had a problem where condensation from the A/C would accumulate in the a/c evaporator case from the drain becoming restricted or blocked, When this would occur, condensation would drip onto the ECM and a problem would develop with misfire and/or starting. 0L Turbo) 2: 10-31-2010 03:13 PM: EJ20G Motor no fuel no injector pulse. com News & Notes. Remove one and only one fuel injector nylon tube from it's place on the intake manifold. I have a 1990 F350 crew cab that I recently bought cheap needing a transmission. They said it was a computer issue. cant go through my senior year without a car. Engine cranks fine and fuel pump runs. Go to: No Start 2: Checking Fuel. There was no spark or injector pulses when it was time for start up. My friend has my hp tuners, so I won't be able to scan it until tomorrow. Miata won't start. Eventually find no injector pulse. 0 and im getting no injector pulse. I trust you used a noid light or led test light to check for injector pulse. Lack of spark would indicate an ignition primary side problem which would also cause not injector pulse. The engine is around the year 2000, and is the EFI model, with the full Delco EST ignition system, (not thunderbolt) and is running a MEFI 1 ECM. Hello I am a newbee here but worked on Chevy's my entire life. -Engine Turns and Fires(got spark) but no injection pulse -There is power on DME pins 27 when key turned , constant power to pin 18 when off and power on pin. 1994 - 1995 Specific Tech: 3: Mar 12, 2010: injectors/ spark plugs: Fox 5. NO spark or injector pulse. Mercruiser 4. 1996 Vortec 1-8 no injector pulse first things first new to the group, hope to find some much need help !!!!!! I have a 96 vortec 5. I check the following items, crank sensor, cam sensor and wiring, I also check all the power input and grounds going to the ECU fuses all check OK. Got spark and no fuel, spray some gas into the intake does it start and run till the fuel runs out? Check for fuel pressure, injector pulse, and the main relay again. My 91 940T has injector pulse, no spark. CAM SENSOR has being replace but yet still injector wont spit fuel, when car left without cranking for 20 minutes and you try to crank, injector spit out once and wont spit again, till have to wait, according to client, ECM has being replace, but yet still car wont start, all earth point was checked and proof valid. where should i start to diagnose? TIA EDIT: Narrowed down to p1500 code fuel pump relay electrical circuit malfunction. The truck will almost start with. Sil240 Posts. 6 liter that has intermittent start issues. 2004 Dodge Grand Caravan SE 3. 1994 - 1995 Specific Tech: 3: Mar 12, 2010: injectors/ spark plugs: Fox 5. via ignition module. Discussion. Hi guys I have a ve ss and have no injector pulse. Confirm the following: • Orange wire should have battery power (12-13) volts at all times. Rundown of failure: Was hard to start on occasion, with 20 seconds of cranking and then finally started. 75 volts to trigger the TFI module. it has spark swapped the fuel pump as I had a suspicion the pump died got pressure to the fuel rail I tested for injector pulse and nothing. Actually, the engine runs fine for the first few seconds after starting and then gets rough. Having no spark and no pulse to the inj. Hi all, we are trying to start up the t/a and are having spark and injector pulse issues. I replaced it. Spark, compression, fuel - no injectors pulse. There is no ignition signal and the injectors are not firing. disconnect injector plug. side under the fuse box. Here is the checklist: Painless wiring harness. For low-impedance injectors (less than 3 Ohms), you need to limit the current to avoid over heating the injectors. bad injector,. no injector pulse?? - i have a 1995 f150 with 4. It has fresh fuel, clean tank, 38psi fuel pressure, spark, but no injector pulse. Pressure in the line seems good though. If EMS says it's trying to fire the injectors are you're not getting a pulse at the injector, it could be either A) wiring, B) damaged hardware, or C) stuck injectors (I've experienced this numerous times). I get a temporary signal to the cold start injector, but nothing to the injectors. could lead you closer to the problem. I have spark ,i have fuel pressure I have power to injectors but no pulsecould it be a fues causing this?? Joeyxxx , May 10, 2020 at 1:25 PM. It is a Holley Dominator with a GM LSx motor. Joined Feb 28, 2010 · 17 Posts. View Profile View Forum Posts Private Message. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. Battery voltage to coil and igniter. Discussion Starter • #1 • Oct 19, 2014. Fuel pump primes, fuel pressure in the hoses, spark is good (so that rules out the CPS). Have put a pulse probe on injector plug and get nothing. no codes set. Now on the way home, the first time in a long time, the car had no problems reving over 5K. The engine will run if I spray starter fluid into the throttle openings and then crank it. Checked all grounds and they also look good. 1 answer & 0 cluster flash when you crank the engine? If so, you have an key based anti theft system issue. I have spark ,i have fuel pressure I have power to injectors but no pulsecould it be a fues causing this?? Joeyxxx , May 10, 2020 at 1:25 PM. I'm working on my son's 91 S15 with the tech 4 in it. Unclip the plug wire from the coil, and just lay the wire on top of the coil tower. This tells the ECM how fast the engine is turning. 3L it cranks but will not run, has no spark or injector pulse. AwdBoostCreep: Factory 2. 5 we replace the Crank speed sensor, re check the the fuel injector for pulse, after pulse is confirm, backtrack and check everything one step backward at a time if this fixes the park problem if not continue on, re-check the harness for the coil (and here's where my main problem was), middle contact is still not showing signal from ECU. did extensive voltage test at computer. Jump to Latest Follow 1 - 12 of 12 Posts. 28 people found this helpful. More Electrical HELP! No injector pulse, no spark from coil. It has no brain and only responds based upon ECU input. First thought was CPS, but if I had a bad CPS I wouldn't get spark. Car was shutoff normally and now won't start. This is in my 69 Camaro with AAW Classic Update harness. Hence with a weak PIP signal, and the SPOUT in, you could get spark but no injector pulse. Assuming the battery is charged, the car has compression, the fuel pressure is adequate, and THE CHECK ENGINE LITE IS ON: If you have: 1. 8 swap in a corrado but i figured the situation applies to a standard 24v as well. I have a 1998 TJ 4. The engine will run if I spray starter fluid into the throttle openings and then crank it. Checklist for spark on that dizzy as I understand it: Pink wire on est has +12 as does coil (+) White wire is connected to the coil (-) Ignition coil is good Pickup coil is good Reluctor is good Whatever you're testing spark with is good 4-pin connector on EST module can be unplugged. Solution - Check for faulty EFI control relay. The spark problem was the module being miswired by the person who worked on my car. 7 fuel injector. My son drove the car to school with no problem and after class he could not get the engine started. please help! - Answered by a verified Nissan Mechanic 2002 nissan sentra 1. Most ECMs use a driver to supply the injector with a ground to fire it, but only if it sees a spark. i am running out of patience with this car, i have spark, i have fuel at the rail, cranks and cranks but still won't start. Next i checked for spark using a spark tester then spray carb cleaner in the Tb and it starts up long enough to burn off the cleaner. Joined May 30 More than likely you have no spark reference, therefore no injector pulse. constant reading on injector conectors is good but no pulse reading when starting. We have just finished rebuilding both engines and reinstalled in the boat, Now we seem to have no injector pulse on eather engine. View Profile View Forum Posts Private Message. EVo8 ecu swap no injector pulse/no spark I am seeking the help of some boosted 3G owners. No spark, possible failed items in order of their probability: A. Now my fuel pump works but still no spark + injectors are not pumping fuel but fuel pump works perfect and there is power to the diz and injectors so i checked the coil its fine. Injector test mode sets up a specific injector pulse width, duty cycle, and an adjustable commanded number of pulses. Now it cranks but no injector pulse no spark and only fuel delivery on prime up. 1 ltr, No Spark, No Injector Pulse 2 Answers. 1996 Vortec 1-8 no injector pulse first things first new to the group, hope to find some much need help !!!!!! I have a 96 vortec 5. No start troubleshooting (fuel pressure, injector pulse, spark) - GM OBDI YouTube Free Menu (Chapter 1) Misfire ID, Compression Test, Vacuum Leaks, Fuel Trim, Head Gasket, Restricted Exhaust, Low Power, DVOM. btw its a 96 quattro AAH engine, help is greatly appreciated. I'm just wondering if anybody has encountered this. 0 bar boost, and better low-end driveability. Re: No injector pulse when cranking. Replaced the crank sensor and the engine control relay with an OEX unit from Ashdown's. The procedures shown in this video can be applied to all cars! First we test for spark, then injector pulse before finally focusing on the fuel pump and related circuitry. WTH! then checked to see if injectors are working. The engine has only 5,000 miles on it. We replaced the ignition module in the distributor, but had no spark still. The owner switched the ignition module over to tbe 86-87 module. Confirm the following: • Orange wire should have battery power (12-13) volts at all times. Engine cranks fine and fuel pump runs. General Diagnosis. Lack of spark would indicate an ignition primary side problem which would also cause not injector pulse. Jump to Latest Follow 1 - 2 of 2 Posts. I have 04 safari replaced spark plugs wires cap & rotor fuel pump spider injectors drove 1 day fine next day code po 200 & miss fire #6 ANY IDEAS TIRED & EXPENSIVE No power to fuel injector 2001 corvette p0200 code I have 2001 corvette with po200 code. Re: No injector pulse - why? The dizzy seems to be the biggest problem on these engine, try to change it for an other. com News & Notes. My friend and I took the injectors on my 98 wrx swap out to test and clean them, re-instralled them and now it won't start. Well i found what was causing my engine control fuse to blow. Fixed that and still nothing. cranks oka, tried diff module and when you jump a and b pins at the crank sensor plug and grd the a pin with a test light i get no spark or pulse at the injectors from the ign module. i have a 98 jetta 2. My friend has my hp tuners, so I won't be able to scan it until tomorrow. Re: No injector pulse when cranking. Any suggestions? Thanks! 05-09-2010, 03:10 PM #2: RP80242GT+T. CrazyIan: Factory 2. Ive got a fully charged battery and a jumper on it, it just cranks and cranks. We are getting an intermittent pulse on injector and coils. The white wire from the distributor to coil was hot all the time we. The PIP signal level needs to be above 6. you may be getting pressure but no volume from the fuel pumpsounds weird but they are 2 different things. The coversion has taken over a year. If you have no spark, no injector pulse, power to coil and injector, and good fuel pressure, chances are you are missing a tach signal to the computer. Most ECMs use a driver to supply the injector with a ground to fire it, but only if it sees a spark. Quote; Post by lilskyline240 » Sat Apr 05, 2008 9:00 am. The distributor serves two functions, One being firing the spark plugs, but the second is pulsing the injectors. When checking with a handheld scanner it shows no codes present, but on the cluster it has a CEL. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. It will run on carb cleaner sprayed into intake. I have gotten so sick of this pickup, I just went and bought a '93 Mazda B2200 that has a carburetor and it runs perfect. Jump to Latest Follow The car will run on starting fluid or if I sprinkle gasoline into the air intake so I have spark. I'm worried that I'm running into a VATS issue. i know the older gm's like this the module controlled spark and fuel. Remove one and only one fuel injector nylon tube from it's place on the intake manifold. Removed ecm and inspected just incase a bad cap or anything obvious. Engine cranks fine and fuel pump runs. Hi guys I have a ve ss and have no injector pulse. i took my car to the shop, they test it for me. 3 no spark or injector pulse \015 I have no rpm input on scan tool. if no spark there will never be injection until you get it (not u) there are 2 transistors driving all 8v kicks and trackers. kwiktsi · Registered. 3 no spark or injector pulse \015 I have no rpm input on scan tool. Fuel pressure: good. I'm having a severe issue I bought a 87 mustang off a guy a few years ago I put a new aux shaft in timed the motor and the car ran great for about 6 months it has the 2. Engine cranks fine and fuel pump runs. Don't jump to conclusions like an ECM. I bought some stuff from Casper's to test the sensors today. it has power to injectors but no ground pulse. STravis · Registered. During cranking, we are getting spark at the spark plugs, but NO fuel injector pulses. It has spark but no pulse to the injectors. No injector pulse I worked at a shop about 8 years ago and this 84 US 928 came in with a blown head gaskets and bad rad. red light on dash it go off normal. I have a 911 as in the title no spark and no Fuel I have no spark No Fuel but fuel pump runs when powered DME relay is supposed to be new DME relay Pelican Parts Forums 85 911 No Fuel Pump, Injector Pulse or Spark - Pelican Parts Forums. Hey everybody, i have a 1989 nissan d21 4x4 3. I'm just wondering if anybody has encountered this. Mass Flo No spark or injector pulse. this is on a rb25 s2 so it has an internal ignitor. My mechanic has worked on the car also for many hours and is stumped. Also checked the fuel rail. I haven't been able to get my car to start. Assuming the battery is charged, the car has compression, the fuel pressure is adequate, and THE CHECK ENGINE LITE IS ON: If you have: 1. Well, I almost finished a swap without posting a bunch of questions up here. Ignition switch relay most time up under the dash by steering column or a CPU/ECM did you have a check engine light on taht stayed on all the time. Hi I am new to this forum thing so I apologize in advance to the administrator it I posted this wrong. It has the E4od. 94 yj no spark, no start: 97mrnsgt: YJ Wrangler Technical Forum: 15: 05-23-2014 05:04 PM: help! no injector pulse, no current to injector: kirkland1625: YJ Wrangler Technical Forum: 3: 02-25-2012 07:10 PM: No spark on start, one spark on run. As was said, check those fuses and the anti-theft system. If you use the key, there is no injector pulse while cranking. 3 Answers the car will start but stalls instantly. 1999 Dakota 3. I have span the cas by hand with ignition on and I have sparc and injector pulse. I also have cranked the car over with the cas out and Tryed to spin the cas by hand. Why does my car have no injector pulse or spark? Crank position sensor. During cranking, we are getting spark at the spark plugs, but NO fuel injector pulses. 1999 Honda accord 2. no spark or injector pulse. I use some diy method to test it. Next day I replaced the coil with the blaster 3. Hi folks, was hoping to fire up my ls3. Sep 1, 2018 #1. is directly to block. Similar Threads - injector pulse spark Forum Date; No spark or injector pulse: 4th Gen Camaro LT1 (1993-1997 Camaro) Aug 26, 2007: Injector pulse width: 4th Gen Camaro LT1 (1993-1997 Camaro) Jun 17, 2017: Planning on doing the LT4 hot cam and have a injector question: 4th Gen Camaro LT1 (1993-1997 Camaro) Dec 3, 2017. I used the following for my three wire hookup to the engine harness from the AAW accessories connector: dark blue fuel to gray fuel power feed on harness, orange BAT1 to orange constant power, and pink IGN1 to pink ignition on harness( this also says. Jump to Latest Follow 1 - 6 of 6 Posts. The result will be the same, no injection pulse. Seems to run OK if it starts. the injector harness ground is grounded and engine to firewall is grounded and battery neg. I want to say the pick-up coil in the. 3 no spark or injector pulse \015 I have no rpm input on scan tool. I have a no start condition. Used a noid light to test each injector clip, no dice. What else could be causing my injectors to not fire?. I'm just wondering if anybody has encountered this. If you have spark, just no injector pulse, make sure you have power to injector. Sounds like you have spark, air, fuel to injectors. Post by auto authority » Thu Dec 08, 2011 3:55 pm has to be in your wiring of the ecu. Chevrolet k1500 getting spark to all plugs, gas to TBI, continuity from ECM to injectors, but no pulse to injectors. Rundown of failure: Was hard to start on occasion, with 20 seconds of cranking and then finally started. No spark and no injector pulse. Do the injectors fire and spray fuel into the engine. No big surprise there. I have wiring diagrams, but it looks to me like both wires go back to the ECU on the diagrams, but on the car it looks like a least one wire is in the last plug on the pass. Noid light confirms and voltmeter shows 12v so ground issue is what I'm at. The coil is not getting the signal to fire. You must make an adapter or test with needle adapters while the injector is hooked up. When it cools enough the circuit reforms and the engine will run for a while. No fuel injector pulses from the fuel injector connectors as tested using a Noid Light. Jump to Latest Follow 1 - 4 of 4 Posts. While testing and diagnosing, we have an incandescent bulb (tail light socket and pigtail) connected to the injector pigtail. You can save this photographic file to your personal device. So, i downloaded the datsun manual and started testing the 35 pin connector. "take a test light. hey guys iv been having this problem, after changing the headgasket car wont run. NO spark or injector pulse. A bad MAP sensor is on the top of my list. If EMS says it's trying to fire the injectors are you're not getting a pulse at the injector, it could be either A) wiring, B) damaged hardware, or C) stuck injectors (I've experienced this numerous times). Using the cranking taper to "sweep" the pulse width can make getting the exact cranking pulse width setting less critical and result in faster starts. If the sensor is bad then the injectors won't turn on and there will be no spark. I switched injectors to stock and have 8 set of these injectors and no matter which injector I use, the #2 cylinder isnt getting fuel. Injectors operate by using a 12 volt supply source to operate a solenoid (via the injector coil) that opens a valve in the tip of the injector. Already check the inertia switch for the hell of it to. 12v to injectors at run and. I still get no spark or injector pulse while turning it by hand v. Ive got a fully charged battery and a jumper on it, it just cranks and cranks. Replaced crank positioning sensor and computer. But those damned fuel injectors just won't open on their own. A short in the dash powerside wiring (the small orange/black wire) caused a no start problem The dash light wiring has been repaired Symptoms: No spark from coil No injector pulse Fuel pump primes but not running during cranking Intermittent Voltage gauge operation Tachometer not working Diagnostics:. Engine rolls over. Engine won't start (new rebuild), it has spark (new opti and coil) but I do not think the injectors are firing. How to check fuel injector pulse using a noid light This is a awesome test because it can be done very fast using a very inexpensive tool called a Noid light. $88 - $111. PURPOSE OF THIS ARTICLE Learning how to interpret injector drive patterns from a Lab. I'm working on my son's 91 S15 with the tech 4 in it. The other thing to look at is how big of a pulse are you commanding. So I think I'm officially stumped. NO spark or injector pulse. 0 and im getting no injector pulse. Jump to Latest Follow 1 - 15 of 15 Posts. unable to pull any codes from the truck because its been out of commision for quite some time. 95 cavalier 2. I use some diy method to test it. So engine has spark, injector pulse is there but something is still not right. I finally just checked the pulse to it today using a noid light and nothing is there. I have an 06 Nissan Titan 5. 2nd Gen Ram Tech - 2000 ram 1500 Has spark but no injector pulse wont start - I have a 2000 ram 1500 with the 5. Checking the car out it has no spark on the plugs or the coil. 98 ram no spark no injector pulse, warning lights no gauges and odometer flashes. they said no fuel injector pulse. In relation to your no injector pulse problem, check the wiring harness from the distributor to the ECM. TFI Module is the ignition control module. Confirm the following: • Orange wire should have battery power (12-13) volts at all times. Unclip the plug wire from the coil, and just lay the wire on top of the coil tower. Select one of the tester's modes by pressing the MODE SET button, the mode No. I have spark, but now we have finally discovered I am not getting any fuel into the cylinders. I've had the same problem for a while now. I posted this a couple of weeks ago but stated some wrong information. So no power means just that No pulse means bad ground to or from computer, The engine computer usually has a separate ground for this. Electric Fuel Pump – A 12-volthigh-pressure fuel pump, (located in the fuel tank) supplies fuel under pressure to the fuel rail on the intake manifold. 7 in the Corvette and Camaro. cranks oka, tried diff module and when you jump a and b pins at the crank sensor plug and grd the a pin with a test light i get no spark or pulse at the injectors from the ign module. I have spark. You can keep your original and have this one as a spare. I get pulses on the other three injectors. I appear to be getting no spark or fuel. That will cost you a lot of wasted money. 1998 buick regal, will die at times, when trying to restart the engine has no spark from coils and no injector pulse, also the fuel pump runs with key on, it wont turn off until you turn off the key--…. When the throttle is. Diagnosing for no spark takes priority with the flywheel sensors topping the list. I have been struggling. I recommend we also check fuel pressure. Replaced ignition because I knew the wires in it were bad and is fine now. 9 (Saturn). help - no spark, no injector pulse, no run I'm working on a 2001 Ram 2500 5. Stinger-Performance. The engine studders and has terrible rough idle at like 550rpm. I have fuel pressure but no wet fuel on plugs. The distributor serves two functions, One being firing the spark plugs, but the second is pulsing the injectors. There's fuel, spark and 12v at the injectors. Re: No injector pulse Help I would also check that you have 12V at the injectors, the ECU might actually be triggering the injectors but there might not be a B+ Signal to energise the injectors. They said it was a computer issue. As the engine heats up the sensor goes open circuit and there is no pulse to trigger the spark or the injectors. I have checked all of the grounds under the battery, cleaned them etc. Car was shutoff normally and now won't start. 2006 Nissan Maxima SL 3. only problem i could find was the fuel pump runs always with key-on. Sounds like the PCM isn`t switching on. Have checked wiring and have power/earth at coils. 3 no spark or injector pulse \015 I have no rpm input on scan tool. 2001 saab 9-5 starts then stalls, no injector pulse. Spark plugs are bone dry even after X time of cranking. no injector pulse, no spark, no IGN. One of the guys that i meet, he told me that might be a distributor problem. It is a VU with an L67 fitted. Fuel pump is definitely running. The ECU sends a grounding signal to the appropriate pin and the injector fires. The owner switched the ignition module over to tbe 86-87 module. There is no fuel output while cranking. Joined Oct 3, 2013 · 31 Posts. Good compression , done 90,000 Miles. WTH! then checked to see if injectors are working. I have checked the. Yes and its pin 20 and there is no pulse on that wire at the ecm or distributer. The only other thing that can cause this is a bad ECM and that is rare but possible. i have fuel pressure at the rail and my fuel pump primes. also whats your Voltage while cranking over? ive seen the Haltechs have that issue when voltage is low. 1997 - 2003 F150 - No spark, no injector pulse! What's up? - Hi Everyone, I've got a 2001 4. where should i start to diagnose? TIA EDIT: Narrowed down to p1500 code fuel pump relay electrical circuit malfunction. No injector pulse I worked at a shop about 8 years ago and this 84 US 928 came in with a blown head gaskets and bad rad. ScannerDanner 261,418 views. I don't think any pulse will be sent if the injector is not plugged into the system to supply output voltage signal to the ECU. ? Just a thought. My ground also is good. Holden Commodore VS-VT Fault -No Injector pulse or Spark - Fuel pump working and pressure OK. btw its a 96 quattro AAH engine, help is greatly appreciated. The spark problem was the module being miswired by the person who worked on my car. Joined Jul 3, 2011 · 372 Posts. Jump to Latest Follow 1 - 6 of 6 Posts. There is no power to the injector during cranking. please help! - Answered by a verified Nissan Mechanic 2002 nissan sentra 1. It always cranks but not start when cold. Spark, no fuel pulse. Thread starter sean lawrence; Start date Jan 14, 2013; 1; 2; Next. It is a VU with an L67 fitted. You can save this photographic file to your personal device. 5 volts to trigger the computer to pulse the fuel injectors, but only needs to be 5. I went over it a couple more times today when trouble shooting. Spark would occur then stop, (intermittent spark). As for checking the fuel injector pulse, I have a pulse light that I plugged into the fuel injector connector. 94 yj no spark, no start: 97mrnsgt: YJ Wrangler Technical Forum: 15: 05-23-2014 05:04 PM: help! no injector pulse, no current to injector: kirkland1625: YJ Wrangler Technical Forum: 3: 02-25-2012 07:10 PM: No spark on start, one spark on run. Luckily the vehicle owner brought a second key for the vehicle, allowing the shop to clear the codes. I have fuel pressure, but no spark or pulse. We were able to get a injector pulse and spark one time but have. I've tried everything I know to do and no injector pulse. can pour fuel in trottlebody and will run til fuel is gone. Re: 89 rander no spark or injector pulse You say you have no injector pulse or ignition I believe the ignition module has nothing to do with the injector but if the ECM doesn't know the engine is turning over it won't send out pulses. If they are good, you will need a pinout of the PCM so you. [FIXED] Explorer no spark - confirm my diagnosis was created by Exranger06 1999 Ford Explorer 4. Fuel Pressure should be set to 37-45 PSI with the engine running, vacuum line on the fuel pressure regulator. rushdylan · Registered. Wiring is good, fuses have been checked, fuel pump is running, etc. Fixed that and still nothing. Still no start. after 2 or 3 seconds as it did before. So I went in and tested the pins directly at the ecu by probing The injector output pins 51,52,60, and 61. 5 we replace the Crank speed sensor, re check the the fuel injector for pulse, after pulse is confirm, backtrack and check everything one step backward at a time if this fixes the park problem if not continue on, re-check the harness for the coil (and here's where my main problem was), middle contact is still not showing signal from ECU. Had same problem before fuel pump was replaced) checked all grounds, checked fuses, relays, fuel pressure, spark finally no injector pulse didn't have voltage to injectors with koeo. 3 no spark or injector pulse \015 I have no rpm input on scan tool. Single flash of noid light at beginning of cranking, then nothing. Checked basics: had fuel, fuel pump runs and has good pressure & good spark but no injector pulse. 1997 - 2003 F150 - No spark, no injector pulse! What's up? - Hi Everyone, I've got a 2001 4. i have all 3 grounds in the correct. no injector pulse. 5l EJ251 cranks but wont start. im getting solid fuel pressure and spark (fires great with starting fluid). 1G 1g no start, has spark no injector pulse Posted by 90tsi6bolt, Sep 1, 2018. They found out I not only had no spark but no injector pulse either. The car will start on starter fluid fine so I had ruled out the timing. We stopped 2 miles from home and yep, the car died again. With a voltmeter or test light Remove plug wire and check for spark while cranking. rushdylan · Registered. If the spark is erratic you need to look closely at the crankshaft position sensor. 28 people found this helpful. Have someone crank the engine--but, hold the plug with a rag so as not to shock you through the plug wire. Thing's I have checked. On key on, the fuel. The fuel injector can be compared to the heartthe injector does the pumping. I first replaced the distributor because they were known to go bad, I checked and I thought it was bad but I was wrong. If I hook up my snapon analyzer I can manually pulse the injectors so I know that all works correctly. Now this beast has been out for about 2 months and it returned with no injector pulse. is the car throwing a spark?. 0 Mustang Tech: 5: Jun 24, 2007: C: no spark/injector pulsing: 1994 - 1995 Specific Tech: 8: Mar 22, 2007. 1 v6 automatic 4 door. This is the No Spark No Fuel No Injector Pulse Helppppp!!!- Jeepforum of a photo I get from the 1998 Jeep Grand Cherokee Fuel Pump Relay package. Unclip the plug wire from the coil, and just lay the wire on top of the coil tower. Replaced the crank sensor and the engine control relay with an OEX unit from Ashdown's. 4, in essence you are disabling the PWM mode. Joined 3 mo ago · 30 Posts. (i figure this means pip sensor is good as well) fuel pump primes, has pressure at schrader valve verified tps. Fuel pressure: good. im using a non turbo dist msd btm and msd coil, the btm is run of a magnetic pkup. I pulled a spark plug and confirmed there's no spark. They we're able to manually get spark and injector pulse by pulsing them with equipment they have. Spark then means the crank signal is working and most likely it would be the injector drivers (pcm) or pcm grounds. 3L no spark no injection pulse. Battery voltage 12. Is the crank shaft position sensor signal reaching the ECM? you need to also check that the ECM is sending injector pulse signals, the only way to do this is take it to. Wires from ECU to Injector open cut , or grounded or short to anything. The last time I had to fix this some doh head had wired his amp to the same ground. Plenty of spark under crank position. ive tried 2 different wiring harnesses. com No injector pulse 02 Ram 1500 - DodgeTalk : Dodge Car Forums. my sister brought a ebII 4. Wait a minute on the ground side of the injector I get no light at all. No Injector pulse. Alfa Romeo GTV6 Forum: Fuel, Electrical & ignition: Need Checklist. Be sure that fuel selector switch is not in the center (or “off”) position. I guess no one readsinjector pulse comes from ecm. could it be that an injector is shorted messing with the rest of them. The ECU cannot pulse the injector without an Ne signal and will not start or run if this signal is not present. Re: 2002 Pontiac Aztec no injector pulse A Cranks sensor problem will effect spark but the question here is, do you have a weak, but corrupted crank signal. There is spark but no injector pulse. Im wondering what is a safe range to change and can you move the peak around a little bit in order to help mpg? or do you have to leave it at the stock location?. CEL light does not come on. dropped the engine into the car and im not getting spark, injector pulse, or anything for igniton angle from the kpro during. I recommend we also check fuel pressure. i find out, the fuel injector didnt spark any fuel at all. The PIP sensor supplies the timing pulse to trigger the TFI and injectors. Car turns over and starts with starter fluid. 08-20-2010, 01:14 PM. i drove it just down 1995 Winnebago no spark or injector pulse - iRV2 Forums. i replaced the ign module in the dist,,still no injector pulse,,book called for checking the ecm/pcm for problems,,replaced that and still no pulse,,i have 12 volts on hot wire to injectors with key on. 1981 300 TD Joined Jan 22, 2010 · 44 Posts. Any ideas on what to try next? Im lost! Thanks in advance. As my title says my 89 m20b20 DME bosche 0261200,172 does not have injection pulse after an engine rebuild, tested pretty much everything and I am on my wits end. No spark, possible failed items in order of their probability: A. Stopped in traffic. unable to pull any codes from the truck because its been out of commision for quite some time. Purchased new set of stock fuel injectors and replaced. This is an issue with a '95 LT1. After relearning key it started and ran fine. "take a test light. any saab gurues out their. As the engine heats up the sensor goes open circuit and there is no pulse to trigger the spark or the injectors. You may have to register before you can post: click the register link above to proceed. This is in my 69 Camaro with AAW Classic Update harness. No Injector Pulse, But Gets Spark ('01-'02) Jump to Latest Follow 1 - 7 of 7 Posts Narrowed it down to no injector pulse. We did find out that it's a compound no fuel no spark for the cylinders. Did some more testing, I'm not getting spark at the plugs either. Hello to all I need help! I have 2005 nissan maxima SE 3. This is where I would start. If the sensor is bad then the injectors won't turn on and there will be no spark. If you have fuel pressure, spark and no TBI pulse, the cheapest and most likely thing to go bad is the ignition module. Typically the signal across the fuel injectors are monitored by a scope (train of pulses). hey everyone so im trying to get my built block fired up for months now but I cant figure out why Im not getting injector pulse or spark signal. im using a non turbo dist msd btm and msd coil, the btm is run of a magnetic pkup. The procedures shown in this video can be applied to all cars! First we test for spark, then injector pulse before finally focusing on the fuel pump and related circuitry. The fuel injector harness has power but no ground (signal) when cranking. Damaged resistors would likely come from trying to drive coil primary directly with non-direct drive coil outputs - this is a fairly common mistake that new users make. Jump to Latest Follow 1 - 6 of 6 Posts. Audi Original "S" Cars - No spark, no fuel injector pulse, no start. square inch for each of the three fuel gas constituents appears to be satisfactory for a “spark-plug” injector. 3 no spark or injector pulse \015 I have no rpm input on scan tool. I have changed the distributor cap, rotor, plugs, wires, crankshaft positioning sensor, and the pcm. It did not seem to want to fire if I used starting fluid eithe. Used a noid light to test each injector clip, no dice. Solution - Check for faulty EFI control relay. they said no fuel injector pulse. I have tried a different ECU with no luck. no injector pulse. However, like larry explained the injectors will not pulse. All grounds are clean and tight, the CKPS and TDC sensor ohm at 2. Changed ECU, cleaned grounds and used a jumper wire to create some new ones. Hi guys I have a ve ss and have no injector pulse. RB25DET - No Injector Pulse. 5L the Engine crank over OK, but there is no injector pulse and no spark. it is an auto pcm, but was running and driving fine before. Jan 19, 2013 #20 Make sure you have 12v power to both pink/black wires in the connector, along with both of the gray/red wires. I am having a misfire in cylinder no. dropped the engine into the car and im not getting spark, injector pulse, or anything for igniton angle from the kpro during. Hello to all I need help! I have 2005 nissan maxima SE 3. I have jumped the fuel pump and it runs and has pressure but still no start. this is on a rb25 s2 so it has an internal ignitor. No restart. I have span the cas by hand with ignition on and I have sparc and injector pulse. Fuel pressure normal. The vehicle was towed to the shop (obviously) and had no injector pulse. Have checked resistance/voltage on injector end of looms and all is normal as well when the car will not start. Crank, spark, fuel pressure - But no Injector Pulse? Hi guys, Recently had my 90adm with 92 GenII 3SGTE at a shop getting clutch, timing belt, waterpump, turbo - so the engine came out. Post subject: Re: 1991 olds 98 no injector. I went through the wire job on the new module and found out he had the crank signal and ground wires backwards. Couple days later, starts to misfire. All fuses are good. Just got the motor in and ready to fire but it has no spark or injector pulse. i get no pulse at the injectors, only two pulses at first but then nothing else. [FIXED] Explorer no spark - confirm my diagnosis was created by Exranger06 1999 Ford Explorer 4. Checklist for spark on that dizzy as I understand it: Pink wire on est has +12 as does coil (+) White wire is connected to the coil (-) Ignition coil is good Pickup coil is good Reluctor is good Whatever you're testing spark with is good 4-pin connector on EST module can be unplugged. red light on dash it go off normal. Replaced injector harness got voltage to injectors. The coversion has taken over a year. help - no spark, no injector pulse, no run I'm working on a 2001 Ram 2500 5. im getting solid fuel pressure and spark (fires great with starting fluid). We tested the power off of the coil pack connecters and they are showing that we are getting 12v so I dont think it's a grounding issue. Perform a compression test, bearing in mind that for the purposes of diagnosing a "no start" you're primaruly concerned that compression in the cylinders simply exists. Car will run if spray fuel into intake. If I bypass the fuel pump relay I get constant fuel flow but no spark or pulse. Still no go. Now this beast has been out for about 2 months and it returned with no injector pulse. Now it cranks but no injector pulse no spark and only fuel delivery on prime up. Author: Subject: No spark or injector pulse: samuel. We've got power at the fuel rail and the coil. Just replaced fuel pump and filter. Still no pulse at the injectors. 1, 3300 (Chevy, Buick, Olds, Pontiac) 1. cranks oka, tried diff module and when you jump a and b pins at the crank sensor plug and grd the a pin with a test light i get no spark or pulse at the injectors from the ign module. I have a feeling that my problem lies elsewhere. As I mentioned I checked the trigger points and they appear to open and close that part of the circuit. I hooked up hptuners and scanned as I cranked it over and nothing reading on the injector duty or either injb1 or injb2. NO spark or injector pulse. 8 swap in a corrado but i figured the situation applies to a standard 24v as well. … read more. I bought some stuff from Casper's to test the sensors today. 5L No Start No Spark No Injector Pulse Posted to Asian Electrical on 11/11/2014 5 Replies hello gents-- long time reader and one of my 1st real questions that i pose to you the readers. you may be getting pressure but no volume from the fuel pumpsounds weird but they are 2 different things. Joined Apr 24, 2017 · 7 Posts. Jump to Latest Follow The car will run on starting fluid or if I sprinkle gasoline into the air intake so I have spark. please if theres anyone in the south jersey area that is good with wiring, come help me and we'll cook you a nice meal and get your beer of choice, i really need this car back. So before you go spend the money on a PCM, your distributor may be the problem. PIP is the electronic module inside of the dizzy. Recommended Posts. ohh, Jun 24, 2010. Parked it up this morning. Used a booster cable to ground a spare spark plug and attached one of the spark plug wires - crank, no spark. 1 answer & 0 cluster flash when you crank the engine? If so, you have an key based anti theft system issue. Replaced injector harness got voltage to injectors. Engine won't start (new rebuild), it has spark (new opti and coil) but I do not think the injectors are firing. can pour fuel in trottlebody and will run til fuel is gone. skjsming · Registered. if have spark trouble shoot injection. Top 1991 olds 98 no injector pulse Help! Posted: Thu Dec 09, 2010. I replaced the whole engine harness, and voilà , it now had both spark and injector pulse. Click to expand I thought that the ecu should be putting out 12v at the pins with the ignition on that’s what everyone on here has said. Main relay can also cause no spark. Module #2 and 3 give no fuel or spark. You can keep your original and have this one as a spare. There is no pulse at the injectors, It just show 6v when i turn the key on. Here is what I have tested and the results: -All the injectors read about 12. tried new ecm, no luck grounded the ecm directly to the battery thinking it was voltage drop. Visitor in New Albany, This could cause no spark or fuel. Pulled the plugs and they were bone dry. On my 97 Deville the display is showing Theft System/car may not restart. Now on the way home, the first time in a long time, the car had no problems reving over 5K. Testing for Spark can very easily and safely be done with a dedicated spark tester. One pin is connected to the battery through the ignition relay and the other pin goes to the ECU. 6 liter that has intermittent start issues. 2l standard trans. 1volts to both the cam and crank sensors, what supplies the voltage to these sensors? i have injector pulse. Ordered samcos from Chris S. This tells the ECM how fast the engine is turning. I get a temporary signal to the cold start injector, but nothing to the injectors. 5 volts to trigger the computer to pulse the fuel injectors, but only needs to be 5.
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