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1991 Ford Explorer XL 4.0L Excessive Emissions, Poor Idle Quality, Surge
HEY EVERYONE, Every have one of those days... I have checked just about everything I know and maybe I just need a nudge. This thing is running full rich and turning the plugs black. (not soaking/raw fuel) just full rich. It's setting a code 42, so i...
FIX posted 10/14/1999
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| VIN | 1FMDU34X8M |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / MULTIPORT EFI W/MAF |
| Emissions | EEC IV CALIF |
| Symptoms | Excessive Emissions, Poor Idle Quality, Surge |
| Occurs | Always, Idle |
| Misc. | 4X4 |
Trouble Codes
| 42 | exhaust always rich |
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Vehicle Data
1991 Ford Explorer XL
| VIN | 1FMDU34X8M |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / MULTIPORT EFI W/MAF |
| Emissions | EEC IV CALIF |
| Symptoms | Excessive Emissions, Poor Idle Quality, Surge |
| Occurs | Always, Idle |
| Misc. | 4X4 |
Trouble Codes
| 42 | exhaust always rich |
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