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1991 Ford Explorer XL 4.0L Poor Idle Quality, Misfire
Vehicle has missfire at Idle(eratic) and under load. Problem is worse when cold, however still present when warm. When miss is present timing light loses a pulse, on any plug wire. Crank pos. sensor looks good on lab scope(5v sign wave with a larger pulse for ...
FIX posted 3/23/1998
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| VIN | 1FMDU34X5M |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | obd1 , CA |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Cold, Under Load, Idle |
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Vehicle Data
1991 Ford Explorer XL
| VIN | 1FMDU34X5M |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | obd1 , CA |
| Symptoms | Poor Idle Quality, Misfire |
| Occurs | Cold, Under Load, Idle |
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