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1991 Buick Century Custom 3.3L Poor Idle Quality
Posted to GM Driveability on 8/15/2015 22 Replies

Engine idles rough when as soon as it goes into closed loop and integrator goes down to 80 and smells rich coming from tailpipe. Checked fuel pressure and pressure is at 42 psi. Checked vacuum and it is a steady 14 inches. Tried another mass airflow sensor and...

22 Replies Received (View Replies)

  Related Documents & Media  1991 Buick Century Custom

 
Message Closed w/FIX

car Vehicle Data

1991 Buick Century Custom

VIN 1G4AH54N0M
Engine3.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / fuel injection system
SymptomsPoor Idle Quality
OccursHot
Message Closed w/FIX

car Vehicle Data

1991 Buick Century Custom

VIN 1G4AH54N0M
Engine3.3 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / fuel injection system
SymptomsPoor Idle Quality
OccursHot