Re: 1992 Pontiac Grand Prix int.stall/no start 3.4 engine

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Posted to Technical Discussion Forum on 4/21/2007

Sorry for the delay of the pics but here they are.

They are both reference signals from the module to the ecm. Here is the suspect bad one. [1992 Pontiac Grand Prix, VREF Waveform].

Here is the new one. [1992 Pontiac Grand Prix, VREF Waveform]

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