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1991 Ford F-150 Custom 4.9L Misfire
Misfire underlight load seems-just like ignition [...] scope patern does not show any problems. Mifire got a lot better when diconecting the egr and the check engine light would come on. But when I would block the egr off with a plate so I could stop the f...
FIX posted 5/13/2000
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| VIN | 1FTDF15Y1M |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBD I |
| Symptoms | Misfire |
| Occurs | Hot, Under Load |
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Vehicle Data
1991 Ford F-150 Custom
| VIN | 1FTDF15Y1M |
| Engine | 4.9 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBD I |
| Symptoms | Misfire |
| Occurs | Hot, Under Load |
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