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1991 Ford Mustang LX 2.3L Excessive Emissions, MIL Lamp on
Posted to Ford Driveability on 8/5/2015 4 Replies

Hello, This mustang came in failed emissions. When vehicle came in, had codes for EGR vacuum switch, TCC solenoid, and MAP sensor. Found shorted EGR vacuum switch (.3 ohms) and shorted TCC sub harness that passes through trans. Replaced both components and tho...

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  Related Documents & Media  1991 Ford Mustang LX

 
Message Closed w/FIX

car Vehicle Data

1991 Ford Mustang LX

VIN 1FACP44M6M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / EFI
EmissionsFederal
SymptomsExcessive Emissions, MIL Lamp On
OccursOn Decel

Trouble Codes

126Map Sensor Signal out of Range
Message Closed w/FIX

car Vehicle Data

1991 Ford Mustang LX

VIN 1FACP44M6M
Engine2.3 L / 4 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / EFI
EmissionsFederal
SymptomsExcessive Emissions, MIL Lamp On
OccursOn Decel

Trouble Codes

126Map Sensor Signal out of Range