Very confused
Thread Starter
Staging Lane
Joined: Oct 2004
Posts: 56
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Very confused Ok, ever since the start of this winter my car has been running very hard. Random misfires and such so i changed the Plugs/wires. I have a 00 Z28 M6 with coming up to 60k on it. I took it to my work and they ran a diagnostic on it and found that i was having random misfires and running extreamly rich. We unpluged the injector for Cyl.2.. nothing changed. Same with 4. There seems to be a problem with my right side of cylenders.
Can anyone please help me. I have no idea what to fix, or too look at now.
Can anyone please help me. I have no idea what to fix, or too look at now.
TECH Regular
Joined: Jun 2004
Posts: 418
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From: Houston, Tx
I had a plug wire that would look like it was secure but wasn't (it needs to snap in place). The car idled rough and the SES illuminated. I secured the plug wires and reset the computer and all is well. It might also be the MAF screen. Do you have a K&N or other oil type filter. You may need to clean the screen very gently with alcohol and a q-tip and reinstall with a paper filter. These are just a couple of easy suggestions....good luck.
Joined: Nov 2001
Posts: 34,629
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From: Schiller Park, ILL Member: #317
Originally Posted by MrEddie
It might also be the MAF screen. Do you have a K&N or other oil type filter. You may need to clean the screen very gently with alcohol and a q-tip and reinstall with a paper filter.
As for the issue at hand, have you checked to make sure you're getting spark on the effected cylinders? Maybe move the ignition coils around and see if the issue moves with them? If it's one whole bank of cylinders, maybe a damaged wire in the coil rail? Have you scanned the PCM for other readings, like fuel trims, misfires for individual cylinders, and/or O2 readings?
