This car runs very poorly. Rough idle extremely poor acceleration and misfire.
Replaced spark plugs and ignition wires. Replaced fuel filter and checked fuel pressure, 41 psi.
Attached scan tool & got 2 codes: 341 intermitent cam sensor / 640 QDM 1 fault. Have cleared them several times and keep getting these 2 codes.
I replaced the cam sensor. No improvement.
I checked the ignition coils for resistance and had approx 6800 ohms on all 3. I checked the voltage to the coils on the ICM pins all have 3 are getting battery voltage with key on. I cleaned the mounting surfaces on the ICM and the plate it mounts to on the engine. I need to know the outputs of QDM 1 so I can make sure I don't have a shorted componet or wires before I attempt to replace the ECM.
Note: Problem seems to get worse as engine temp rises.
Please provide wiring diagram if possible. Include any additional advice you think would help me out.
Thank You !
kenneth E. Smith
Sunday, July 15th, 2012 AT 7:21 PM