× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1991 Pontiac Bonneville LE 3.8L Poor Idle Quality
Posted to GM Driveability on 3/5/2006 13 Replies

Car starts fine and runs good with no problems. When engine gets to normal operating temperature idle increases to [...] rpm. Sometimes shutting it off and restarting will drop idle to normal but not often. With a # 1228253 ECM I felt the computer was the only...

13 Replies Received (View Replies)

  Related Documents & Media  1991 Pontiac Bonneville LE

 
Message Closed w/FIX

car Vehicle Data

1991 Pontiac Bonneville LE

VIN 1G2HX54CXM
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
EmissionsOBDII
SymptomsPoor Idle Quality
OccursHot
Message Closed w/FIX

car Vehicle Data

1991 Pontiac Bonneville LE

VIN 1G2HX54CXM
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / sefi
EmissionsOBDII
SymptomsPoor Idle Quality
OccursHot