07-31-2012, 06:57 PM
Join Date: Jun 2009
Total Cats: 0
So I reassembled everything to how it was when I had the car running right a couple weeks ago.
I started it up, and the misfire was still there, and sounded exactly the same as it did before.
I triple checked the COPs again, and each one had good 12v, ground and signal.
The interesting thing is that if I disconnected the #4 COP connector, the idle stayed exactly the same; but if I unplugged any of the other COP connectors, the motor quickly died.
Edit: Also, if the motor is idling, and I disconnect the #4 injector connector, the idle stays exactly the same as well.
Also, I pulled the fuel rail off and attached each injector to the rail with some wire and plugged each of them in. When I cranked the car, the #4 injector wasn't firing, but the other 3 looked fine.
So I switched injector 3 and 4 to see if it was the injector, and when I cranked the car again, the injector for cylinder 4 was still the only one not firing. So I can safely say at this point that the injectors are all working properly.
I've followed the wiring all the way back to the ECU connector, and all 4 injectors are getting a 12v signal while the car is idling, yet the #4 injector is not firing for some reason.
Last edited by ShadowZ; 07-31-2012 at 09:07 PM.