× 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 Chevrolet C1500 Cheyenne 5.7L Poor Idle Quality, Hesitation, MIL Lamp on
Posted to GM Driveability on 5/9/2000

Thanks in advance for your help.

Put vacuum gauge at EGR & get 15 inches of vacuum at EGR when accelerating. Sometimes it drops back to 10 inches after peaking at 15. Mitchell manual says should be less than 10 inches of vacuum and if higher replace EGR filt...

  Related Documents & Media  1991 Chevrolet C1500 Cheyenne

 
Message Closed

car Vehicle Data

1991 Chevrolet C1500 Cheyenne

VIN 2GCEC19K9M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursHot, on Accel, Intermittently

Trouble Codes

32egr circuit
Message Closed

car Vehicle Data

1991 Chevrolet C1500 Cheyenne

VIN 2GCEC19K9M
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / TBI
SymptomsPoor Idle Quality, Hesitation, MIL Lamp On
OccursHot, on Accel, Intermittently

Trouble Codes

32egr circuit