You say there are no shorts in the harnesses, but did you check for shorts to ground at the PCM injector driver pins? If you are looking for fuel injector connectors, then you have come to the right place. More than that means a bad connection or bad wiring. Cheers.. alfredo wrote: I haven't figured out yet how to disassemble the ECM harness connector to unplug wire 88. I later replaced the regulator, now this. YourMechanic's technicians bring the dealership to you by performing this job at your home or office 7-days a week between 7AM-9PM. For example, whichever injector connector #4 is conected to will pulse while the rest will spray steady. Here is the whole story with this money pit of an issue I am in. Internet #307965633. High impedance injectors are the most common found on cars these days. This ruins fuel economy since all of the fuel may not be combusting, and you have to press harder on the gas pedal to get the car to move. Turn the ignition switch to the ON position. One had actually split in two pieces.
Fuel Injector Wiring Harness Problem 2
Poor fuel economy: The primary function of a fuel injector is to maintain a stable ratio between the fuel and air entering the engine. 1 Home Improvement Retailer. Step 4: Test resistance with DVOM.
Fuel Injector Wiring Harness Problem
Thanks to everyone for updating. A misfiring engine will appear shaky, this problem may be caused by a fault in the wiring of the Injector harness. The fuse is on the "upstream" side of the connector from which you are probing, and is isolated by the open relay and oil pressure switch anyway, so it is irrelevant here. One side of the injector connection will have 12 volts. When i pull the rail off and turn the engine over and watch the ejectors i get steady fuel spray through injectors 1-3 and a pulsing spray thru injector 4. when i swap connectors around, the issue follows the wire. Unplug the electrical connector from the fuel injector you want to test. Hi All, The 'service engine' light on my 1997 T&C (3. One is black and the other three have black stripes on green, pink, and blue.
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Incorrect voltage delivery: Like the situation in fuel-to-air delivery, it is important to have the right voltage delivery. However disconnecting Fuel Pump fuse (#28) and using test light connected between + battery and injector plug ground terminals results in NO LIGHT.. Above post updated as promised. You will need to visually identify your connector and compare it to the detailed pictured below in our online shipping cart. 6L Engine Motor Fuel Injector Wire Wiring Harness 14-19 * in großer Auswahl Vergleichen Angebote und Preise Online kaufen bei eBay Kostenlose Lieferung für viele Artikel! The other should read around 12 volts.
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They are typically secured by bolts and can be removed with a basic socket set including an extension. What usually happens is I turn the key to the on position, the pump primes, the rail fills up and it seems almost immediately the cylinders start filling. Tip: You can find the correct resistance for your injectors by searching online or in your vehicle's repair guide. If this were some other kind of electronic device I wouldn't hesitate to cut out the bad portion, solder in a new bit of wire, and close up it all up with shrink-wrap... but I'm not 100% certain this would be a good idea in this situation. The above tests would suggest that there is a ground to short in the injector wiring harness for all the injectors, however the car runs ok on cylinders 1-3 and only the cylinder #4 injector stays open when engine cranking or running. We currently cover over 2, 000 cities and have 100k+ 5-star reviews... I did have 2 other engine stumbling problems since. Volkswagen Logo image credit goes to: vesilvio. Adding two steps to inspect for chafed wires and install a test... 3 billion in sales revenue and a net profit of EUR 906 million in 2018. airbnb with pool washington 21. Another indicator is flickering and dimming lights. In a mechanical fuel injector, instead of the ECU sensors, there is a mechanical fuel pressure that controls fuel spray.
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Use different electrical tape (or no tape)? The santa fe new mexican obituary Number Of Wires: 1. The gray wires are the positive supply for the fuel pump and injectors. FIXED] cylinder #4 fuel injector has constant ground signal.
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I have also tried a new ECM but to no avail. Power comes from the fuel pump fuse and through the pump relay and oil pressure switch to the in-harness splice labeled S136. One was apparently in the main engine harness since buggering around there worked somehow (pulled whole harness down, unwrapped wires, pulled stuck wires apart, didn't see exposed copper, but... ). Step 3: Set DVOM to measure ohms. The locking tab width is smaller in Type A. Nippon / Denso Style Male Fuel Injector Connector Kit. Ok wow alot of feedback, thanks guys. Then the PCM ground s out the injector at the proper time. The 1st Gen Board is for general questions regarding the first generation of Neons (1995 - 1999. ) Learn to test and analyze automotive fuel injector circuits from a wiring diagram perspective. Shoebox has a good wiring diagram to study on his site. I think the original injectors were dying, at least very worn and clogged.
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If you are experiencing any difficulty with testing your injectors, our certified technicians here at YourMechanic would be able to assist you with diagnosing the problem and replacing any bad fuel injectors. Warning Light: For most vehicles, once there's an issue with the engine, the engine warning light comes on. With everything connected but with the fuel rail off and cranking the engine there was about 25mm fuel ejected from cylinder4 fuel injector. Done correctly the harness's will last as long as the originals. If you again isolate the harness from the PCM and redo the tests while wiggling the 5-pin connector and still find short(s), you can probably rule out the PCM. If you're unfamiliar with the processes of testing your fuel injector and suspect it may be the fault, take a visit to the local mechanic. I was able to get it started and drove home on 3 cylinders, but it burned out the injector driver on my PCM for the shorted injector. I'm stumped.. Can anyone tell me what's going on? My question is, if these symptoms are somewhat common, what are the steps to diagnose the source. Has anyone really been far even as decided to use even go want to do look more like? Full factory options - AWD, rear AC, towing package, leather seats,... Reusing a broken fuel injector connector is just asking for problems!!!!! The issue we are having is that the engine will only run if you hot wire the cold start injector.
I took it for a spin around the neighborhood a few times. 7RRs; 70mm TB; 75mm ProM; 30lbers; full exhaust; Vortech A... 14. The injector circuit is 120V and has some grunt. Here is what we got with the 92 Legacy wagon with no Fuel Injector Pulse.
Discussion Starter · #1 · Apr 2, 2021. Cheers... alfredo wrote: I just hate cutting wires. You should get outputs within range of one another. Also, is your water temp guage working on your guage cluster? The fuel pump, then "ground distribution cell 14", (wherever that is) the fuel pump relay, and the oil pressure switch.
I will post the complete Engine Performance schematic, in the morning. Continuity to engine ground existed on ALL the injector plug ground terminals whether the ECM was connected or not. If you don't know where they are, use the engine diagram in your Owner's Manual to identify them. ) This allows the injector to deliver precise amounts of fuel into the cylinder, even while the engine is spinning at higher RPMs. I just hate cutting wires, but I appreciate and I like your suggestion as it likely is the only conclusive test for ground short in the wiring harness unless there is something else going on, given the weird test results I've gotten. While the injector might open with a smaller voltage. 8 posts • Page 1 of 1. ok iv been having major trouble getting my car to start and run smooth and iv more or less narrowed it down to fuel delivery issue. 2002 Chevrolet TrailBlazer LS 4WD SPORT UTILITY 4-DR - 6594095656. The fuel-pump-relay harness (included in the EZ-EFI fuel pump kit) consists of three wires: A long red wire feeds power to the fuel pump, a wire with a connector to the main EZ-EFI wire harness and a black ground wire.
3. using test light connected between + battery post and ground terminal on all injector plugs produces LIGHT ON.. 4. One of the wires will be black with a colored stripe and the other wire is either yellow w/stripe or blue w/stripe. List of kern county public defenders #1 Just wanted to let everyone know there has been reports of 850s breaking the booster injector wires (Stock OEM THROTTLE INJECTORS). The 5 pin plug is so close to the injectors its sad, (clipped to the dipstick) so I'm hoping its in the plug itself, as there is a lot of wire between it and the ECM. From the beginning, I've been visualizing the wrong type of injector for this application.
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