|
1991 Ford Explorer XL 4.0L Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp on
This vehicle runs rich all the time. Has new Oxygen sensor, and major tune up. The Oxygen sensor seems to run a 800mV all the time? The Mil light comes on when decellerating. Long trips (up to 3hours or more) the Mil does not come on at a steady cruise. Anyone...
FIX posted 10/22/1998
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle
|
Message Closed w/FIX
|
Related Documents & Media 
| VIN | 1FMDU34XOM |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | On Decel, Idle |
Trouble Codes
| 42 | System indicates Rich KOER |
Message Closed w/FIX
Vehicle Data
1991 Ford Explorer XL
| VIN | 1FMDU34XOM |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / EFI |
| Emissions | OBD1 |
| Symptoms | Excessive Emissions, Poor Idle Quality, Poor Fuel Economy, MIL Lamp On |
| Occurs | On Decel, Idle |
Trouble Codes
| 42 | System indicates Rich KOER |
Video