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1991 Pontiac Grand Prix, Injector Waveform
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.
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| Engine | 3.1 L / 6 cyl |
| Subsystem | ECM/Inputs/Outputs |
| Component | |
| Condition | Known Bad |
Vehicle Data
1991 Pontiac Grand Prix 3.1L
| Engine | 3.1 L / 6 cyl |
| Subsystem | ECM/Inputs/Outputs |
| Component | |
| Condition | Known Bad |