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1993 Ford Explorer Eddie Bauer 4.0L Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp on
We found codes 172,173,176,177. after clearing codes - they almost immediately return - even on a cold engine start up, even with the coolant temp sensor unplugged to keep it in open loop. On a test drive with scanner - one bank will be rich O2, the other lean...
FIX posted 10/1/2001
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Related Documents & Media | VIN | 1FMCU24X7P |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | OBD1 FED EMISSIONS |
| Symptoms | Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp On |
| Occurs | Cold, Hot, Cruise, Idle |
| Misc. | Cal 3-57B-Roo |
Trouble Codes
| 172 | o2 not switching lean bank 1 |
| 173 | o2 not switching rich bank 1 |
| 176 | o2 not switching lean bank 2 |
| 177 | o2 not switching rich bank 2 |
Message Closed w/FIX
Vehicle Data
1993 Ford Explorer Eddie Bauer
| VIN | 1FMCU24X7P |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 5-speed Standard |
| Delivery | FI / EFI |
| Emissions | OBD1 FED EMISSIONS |
| Symptoms | Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp On |
| Occurs | Cold, Hot, Cruise, Idle |
| Misc. | Cal 3-57B-Roo |
Trouble Codes
| 172 | o2 not switching lean bank 1 |
| 173 | o2 not switching rich bank 1 |
| 176 | o2 not switching lean bank 2 |
| 177 | o2 not switching rich bank 2 |
Video