× 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
1988 Buick Regal Limited 2.8L Excessive Emissions, Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 8/26/1999

The problem is no 5V ref. voltage from ecm terminals C7 and C12. I replaced the ecm and still the same problem. With TPS, MAP, EGR, and coolant level sensors all disconected and ecm disconected I take a test light connected from B+ to C7 or C12 with dvom h...

  Related Documents & Media  1988 Buick Regal Limited

 
Message Closed w/FIX

car Vehicle Data

1988 Buick Regal Limited

VIN 2G4WD14W6J
Engine2.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / EFI
EmissionsUS EMISSIONS
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways
Message Closed w/FIX

car Vehicle Data

1988 Buick Regal Limited

VIN 2G4WD14W6J
Engine2.8 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / EFI
EmissionsUS EMISSIONS
SymptomsExcessive Emissions, Poor Fuel Economy, MIL Lamp On
OccursAlways