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International Automotive Technicians Network
1992 Ford Aerostar 4.0L Excessive Emissions
Posted to Ford Driveability on 12/17/2001 5 Replies

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...

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  Related Documents & Media  1992 Ford Aerostar

 
Message Closed w/FIX

car Vehicle Data

1992 Ford Aerostar

VIN 1AFMDA312X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsCA
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

173Rich signal from O2 sensor
Message Closed w/FIX

car Vehicle Data

1992 Ford Aerostar

VIN 1AFMDA312X
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / SEFI
EmissionsCA
SymptomsExcessive Emissions
OccursAlways

Trouble Codes

173Rich signal from O2 sensor