Thanks all for the suggestions. I will try cleaning the IAC valve, can't hurt.
Quote:
Originally Posted by 80stech
You can try rapping on the MAF with your knuckles while the engine is running to see if there is a stumble. (doesn't rule out a bad MAF though) You can also try disconnecting the MAF (key off) and try taking it for a drive. (doesn't mean for sure the problem is the MAF but gives some direction) The throttle pedal pots giving offset or opposing signals is normal. Are you really really sure there are no codes? How old are the spark plugs?
and yep, idle air control might be worth a try.
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I just replaced the spark plugs, but did not change the coils. the old ones were the originals. did not notice any difference before and after.