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1994 Ford F250 2WD 4.9L Excessive Emissions, Allways rich
This truck is allways rich. No matter what I do. Compression on all 6 cyl's is 105 or 110 lbs. Is that low ? Can't seem to get a spec on that. Has used motor, but all the original EFI stuff was re-used. Can't find a vacuum leak anywhere. Tryed moving the d...
FIX posted 2/6/2000
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Message Closed
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| VIN | 1FTEF251RN |
| Engine | 4.9 L / 6 cyl |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, Allways Rich |
| Occurs | Always, Hot, on Accel, Idle |
| Misc. | Has Used Motor |
Trouble Codes
| 172 | O2 not switching lean |
| 173 | O2 not switching rich |
Message Closed
Vehicle Data
1994 Ford F250 2WD
| VIN | 1FTEF251RN |
| Engine | 4.9 L / 6 cyl |
| Emissions | Not OBD-II Compliant |
| Symptoms | Excessive Emissions, Allways Rich |
| Occurs | Always, Hot, on Accel, Idle |
| Misc. | Has Used Motor |
Trouble Codes
| 172 | O2 not switching lean |
| 173 | O2 not switching rich |
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