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Re: 1988 Grand Prix 2.8L Tip In Stumble....got me stumped.
Posted to Technical Discussion Forum on 9/22/2005

Aaron,

It has been a while since I worked on a speed density system. But I was wondering if you are reading this voltage off your scan tool or a DVOM? Because all the speed density systems I worked on that were 1988 had to be IDed to the scan tool as a 1989 ... Login to read more.