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International Automotive Technicians Network
Re: need help on a 93 GMC1500
Posted to Technical Discussion Forum on 1/1/2005

Hello Gary

Does it run bad at idle, cruise, WOT all the time, hot or cold. Scan info - stft ltft iac spark map what is the o2 doing rich lean during the problem. I can think of many things but a couple I can give without any more info would be ringing inject... Login to read more.