check engine light, not coming on.
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From: MO
Car: 91 Z28
Engine: 305TPI
Transmission: 5 speed
check engine light, not coming on.
The car sat for about a month or more. Had to jump it. It took a few seconds after started to idle up. Then if i gave it a little gas, when coming down it would go down to about 500 rpm. Then go up. Did that for a few minutes. I started playing with it and i unplugged maf, seemed like it didnt change how it ran and didnt turn on check engine light. Then i unplugged maf, tps, iat and it still didnt come on.. Shouldnt the light have came on? Ita a 99 ls1..
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From: Richlands N.C.
Car: '92 RS
Engine: 350 carb'd
Transmission: T-5
Axle/Gears: 4.10
Re: check engine light, not coming on.
It would come on after the engine ran long enough for the pcm to pick up that something was not in specs.
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