Question about 1994 GMC Safari

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94 safari runs ruff when at stops. engine light comes on priodically

Engine wants to stall when at stop lights or when idleing,engine light has started to come on more and more frequently,almost as if something is blocking the exhaust. please help

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Remove catalitic converter or might need to replace the upper intake gasket.

Posted on Oct 03, 2008

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I had an 88 that did something like that, it would idle up and down it seemed to be worse when the engine was cold. It turned out to be the MAP sensor, I never did get a check engine light. A friend of mine had the same truck and we swaped sensors back and forth until we found the problem.

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Your battery is getting tired. When you step on the gas and the lights get brighter, it is because you are running the alternator at a higher speed and you are making more electricity which the lights are more than happy to gobble up.

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its in a relearn right now drive it for awhile in town stop and go traffic good luck

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