Step 3: Touch the negative lead of the DVOM to a ground source. If I had this problem I'd try a couple of things first, before trying to debug a wiring harness or computer problem. This allows the injector to deliver precise amounts of fuel into the cylinder, even while the engine is spinning at higher RPMs. 3L Ford Ranger Fuel Injector Wiring Diagram for Fuel Injector Wiring Diagram, image size 618 X 850 px, and to view image details please click the image. While the injector might open with a smaller voltage. I got all 4 injectors new off Amazon for 85. One had actually split in two pieces.
Auxiliary Harness Connections. We replaced the outer wiring harness for a 3rd time and the truck worked for 5 weeks. This can be examined without hassle as there will be considerable fuel spilled around the injector. That would imply that none of the injectors is stuck open and that the problem must be electrical. A higher reading means there is low resistance in the fuel injector wiring harness. This can also be a signal to check your Fuel injector. This electrical test is not always perfect for finding the issues with a fuel injector. This problem may also be a sign of a dirty air filter or a bad plug. By continuing to browse our site you agree to our use of data and cookies. Has anybody determined a solution to this problem? So, am I correct in assuming the injector driver in the PCM has a short? If your injector belongs to the high impedance category, which is the common type, you should have a resistance range between 12 to 17 ohms. I did some work yesterday to replace out the fuel injectors yesterday. I just pulled the upper intake and the injectors.
2002 Chevrolet TrailBlazer LS 4WD SPORT UTILITY 4-DR - 6594095656. A wiring harness is an assembly of cables in which wires that transmit this electrical energy are contained. Set the multimeter to low ohms and measure each non red fuel injector wire from the fuel injector connector to the matching pin on the computer connector. 2016... TC light is coming on due to a misfire because of a frayed wire inside of the fuel injector wire loom, causing one of the injectors to not.. System Wiring. Does the fuel injection ground wire go onto? It is possible for the injector to cause issues even if it is receiving the correct voltage. Do I need to replace the upper intake manifold gaskets while I'm there? One contact for all 4 showed only a 2-3.. briefly recap, the CEL is showing problem with #2 injector. Unplug each fuel injector from the wiring harness. However I do not understand one PCM allowing spray without cranking.
It was the coil closest to the valve cover (cyl 2 & 5 I recall). This is the weirdest set up I've come across. No need for splicing, and no need to scrounge around junk yards looking for fuel injector connector pigtails. Leave the ground lead in position and test all of your injector wiring harnesses.
It mounts on the upper intake plenum right where the upper and lower intake plenum join. We cover how these regulators work with a carburetor and.. test light connected to injector RED wire. The tan wire is the ground driver, and all the other cylinders show zero on their driver wires with the engine running and the injector connector pulled. Plug-and-play design allows for hassle-free installation. Step 2: Remove injector wiring harness. I'm stumped.. Can anyone tell me what's going on? "Knowledge is a weapon. Disconnect injector wireharness. Find the acupuncture probe from the kit. We also carry EV1 to EV6 connector conversion adapters, and wire terminal release tools.
Signs of Wiring Harness Failure. Attach noid light across the two terminals. Code 72 suggests you have an issue with cylinder 1 or 2. the return wires are all separate for each but the signal wires do 2 injectors each. Oh and i have two different PCMs iv been using to test.
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