High Idle and Shut off

1998 BUICK SKYLARK
200,032 MILES • 6 CYL • FWD • AUTOMATIC
Avatar
GAROAM22
  • MEMBER
  • 2 POSTS
When i start my car the engine idles high and revs until it dies out,the tailpipe is not attached and i already checked the vacuum lines
May 16, 2011 at 6:37 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
WRENCHTECH
  • CAR REPAIR CONTRIBUTOR
  • 20,761 POSTS
The idle is controlled by metering small amounts of air into the system. You either a mechanical issue with the throttle plate dirty or getting stuck, a defective IAC (idle air control) or it has a vacuum leak elsewhere in the system.
May 16, 2011 at 6:51 PM
Advertisement