check engine soon light on at idle

2004 CHEVROLET BLAZER
197,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
KARI02
  • MEMBER
  • 2 POSTS
check engine soon light comes on when car idles with heat on for 10 min+ turns off again after running at highway speed. I just had transmisson work done and a new thermostat installed.
Jan 12, 2011 at 11:11 PM
Advertisement
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check engine light on
Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.
Jan 13, 2011 at 12:27 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.