Quote:
Originally Posted by TurboBob
do the ECU reset again, but unplug your O2 sensors so the trims can't learn.
See if that changes the re-occurrance of the symptom.
Bob
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This ABSOLUTELY did the trick for me, except I unplugged the O2s without resetting the ECU (just to record any changes before/after resetting the ECU). Now, my car drives like an absolute champ, so I'm not even going to bother resetting the ECU... the idle RPM doesn't fluctuate up/down/up/down, the acceleration is smooth through the entire RPM band, and when letting off the gas in neutral the rpms step down controllably instead of bottoming out at 300-400 RPM (almost stalling the engine).
I don't suppose there are any ramifications to unplugging the O2s beyond freezing your fuel trims (which actually improves performance on my car). The only thing is that my ARM guage is practically useless now, but what a small price to pay, I never used it anyways.
I actually enjoyed driving to work today, the problem is gone.
- Jeff
EDIT: I wanted to also mention that the BRAND NEW ECU I swapped in had no effect on this problem, prior to the fix implemented above.