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1992 Ford Aerostar 4.0L Excessive Emissions
Hello fellows, this mini-van was sent to us by a shop that replaced ECT, O2 Sensor, and MAF sensors. Emissions hover at around 8% CO and [...]. We checked O2 sensor stuck at inrich. Replaced O2 sensor, no change. Disconnected MAF CO dropped to below 1% so we r...
FIX posted 1/7/2002
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Message Closed w/FIX
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| VIN | 1AFMDA312X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | CA |
| Symptoms | Excessive Emissions |
| Occurs | Always |
Trouble Codes
| 173 | Rich signal from O2 sensor |
Message Closed w/FIX
Vehicle Data
1992 Ford Aerostar
| VIN | 1AFMDA312X |
| Engine | 4.0 L / 6 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI / SEFI |
| Emissions | CA |
| Symptoms | Excessive Emissions |
| Occurs | Always |
Trouble Codes
| 173 | Rich signal from O2 sensor |
5 Replies Received
5 Replies Received
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