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1991 GMC C1500 Sierra, Fuel Supply Waveform
Engine cranking, no start, CH A injector power, zoomed in x20, CH B MAP signal wire, zoomed in x7, CH C coil wire with low kv and no burn times because cylinders, piston rings and new plugs are fuel fouled, CH D one injector amps on time of 87ms, open CTS
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| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Fuel Supply |
| Component | , |
| Condition | Known Bad |
References
Vehicle Data
1991 GMC C1500 Sierra 5.0L
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Fuel Supply |
| Component | , |
| Condition | Known Bad |
Video