High idle when car is warm

1992 MERCEDES BENZ 500SL
124,000 MILES • V8 • RWD • AUTOMATIC
Avatar
AGLUX1628
  • MEMBER
  • 1 POST
The car starts with no problem and idles normal when car is cold. But once it's warmed up the car idles at 12000 rpm. What can I do to fix this?
Feb 15, 2015 at 1:18 PM
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.
Advertisement
Avatar
DR LOOT
  • CAR REPAIR CONTRIBUTOR
  • 2,311 POSTS
sounds like the idle control vale is dirty, you could remove and clean it out with carburetor spray see what that does, also check all of your vacuum lines make sure they are not cracked especially to the transmission.
Image (Click to enlarge)
Attached Media
Feb 16, 2015 at 7:58 AM
Advertisement