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1991 Pontiac Grand Prix, Injector Waveform
Posted to the Waveform Library on 3/18/2000

This voltage waveform is better than the first time I saw it on this car. The arrow shows the pintle-closing hump, which occurred much sooner on the good injector with a much sharper downslope. Inductive kick peak voltage was 35v here, 75v on new injector.

 

car Vehicle Data

1991 Pontiac Grand Prix 3.1L

Engine3.1 L / 6 cyl
SubsystemECM/Inputs/Outputs
Component
ConditionKnown Bad

car Vehicle Data

1991 Pontiac Grand Prix 3.1L

Engine3.1 L / 6 cyl
SubsystemECM/Inputs/Outputs
Component
ConditionKnown Bad