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1987 Buick Gran Nat, Injector Waveform
I connected a #194 lightbulb to the ground side of #1 injector so I would know which was #1. That is why it is slightly higher. I read this waveform to show the ECM was intermittently holding the injectors on too long and at the same time, which is causing the...
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| Engine | 3.8 L / 6 cyl |
| Subsystem | ECM/Inputs/Outputs |
| Component |
Vehicle Data
1987 Buick Gran Nat 3.8L
| Engine | 3.8 L / 6 cyl |
| Subsystem | ECM/Inputs/Outputs |
| Component |
Video