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1991 Buick LeSabre Limited 3.8L Excessive Emissions
Posted to GM Driveability on 10/9/2010 20 Replies

mass air reads aprox 20gps at idle runs rich inj pw 14ms wire good from mas sensor to ecm changed prom ecm & mafs reads air flow when sensor un pluged when motor stopes air flow 0gps

20 Replies Received (View Replies)

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car Vehicle Data

1991 Buick LeSabre Limited

VIN 1G4HR54C4M
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / multi port
Emissionsc3
SymptomsExcessive Emissions
OccursAlways
Message Closed

car Vehicle Data

1991 Buick LeSabre Limited

VIN 1G4HR54C4M
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / multi port
Emissionsc3
SymptomsExcessive Emissions
OccursAlways