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1992 Cadillac DeVille, ECM/Inputs/Outputs Waveform
This is the Oxygen sensor signal viewed at 1ms/div to see more detail. It looks like Alternator Ripple voltage is being induced into the O2 signal.
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| VIN | 1G6CD53B9N |
| Engine | 4.9 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransaxle (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | ECM/Inputs/Outputs |
| Condition | Known Bad |
Vehicle Data
1992 Cadillac DeVille 4.9L
| VIN | 1G6CD53B9N |
| Engine | 4.9 L / 8 cyl / GAS |
| Trans | 4-speed AutomaticTransaxle (Electronic) |
| Delivery | Fuel Injection |
| Subsystem | ECM/Inputs/Outputs |
| Condition | Known Bad |
Video