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1992 Ford F150 4x4 5.0L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Truck came in for smog test and failed idle and cruise CO and HC. CO readings are off the scale at both idle and cruise rpms. Has a KOER code 173=EGO not switching, rich exhaust. Checked data stream and found Coolant Temp Sensor at 196F, O2 sensor is fixed...
FIX posted 5/27/1999
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Message Closed
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| VIN | 4FTEF14N1N |
| Engine | 5.0 L / 8 cyl |
| Emissions | OBD1 CA EMISSIONS |
| Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | 4X4 |
Trouble Codes
| 173 | KOER EGO not switching rich exhaust. |
Message Closed
Vehicle Data
1992 Ford F150 4x4
| VIN | 4FTEF14N1N |
| Engine | 5.0 L / 8 cyl |
| Emissions | OBD1 CA EMISSIONS |
| Symptoms | Excessive Emissions, Poor Fuel Economy, MIL Lamp On |
| Occurs | Always |
| Misc. | 4X4 |
Trouble Codes
| 173 | KOER EGO not switching rich exhaust. |
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