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International Automotive Technicians Network
Re: 1988 pontiac grand prix
Posted to Technical Discussion Forum on 6/29/2006

There are trouble code charts on this site Milan , bookmark it , comes in handy sometimes. [...] [[...]]

I think your 5 volt refrence is shorted to ground. Use the tps , middle wire is 5v ref , use your volt meter and see if there is any voltage on it , if n... Login to read more.