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1999 Ford Expedition, Ignition Waveform
This Coil problem was backfeeding the PCM and actually shutting it down.
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| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Ignition |
| Component | Other |
| Condition | Known Bad |
Vehicle Data
1999 Ford Expedition XLT 5.4L
| Engine | 5.4 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransmission (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | Ignition |
| Component | Other |
| Condition | Known Bad |
Video