× 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
1998 Cadillac DeVille 4.6L Poor Idle Quality, MIL Lamp on
Posted to GM Driveability on 4/9/2007 7 Replies

Welcome any response and help. I have a Deville that at random increases idle slowly and up to 1500rpm - 2000rpm. Turn eng. off and restart,idles normal at first, then increases again slowly. Customer previously replaced -IAC,TPS,EGR. Cannot find any vacum lea...

7 Replies Received (View Replies)

  Related Documents & Media  1998 Cadillac DeVille

 
Message Closed w/FIX

car Vehicle Data

1998 Cadillac DeVille

VIN KD6KD54Y8W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursIntermittently
Message Closed w/FIX

car Vehicle Data

1998 Cadillac DeVille

VIN KD6KD54Y8W
Engine4.6 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsPoor Idle Quality, MIL Lamp On
OccursIntermittently