1993 Toyota Supra high idle

1993 TOYOTA SUPRA
205,000 MILES • 6 CYL • 2WD • MANUAL
Avatar
93SUPRA
  • MEMBER
  • 1 POST
i have a 93 supra. the car was running perfect 3 days ago. i went to crank it up about an hour after drving it home and the idle was realy rough. decided not to drive the car. the next day i cranked it up and now it idles steady at 1800 rpms. drove the car around the block and it is running very rich with a little black smoke. i need some help please!!!! there is no CEL
Oct 9, 2008 at 12:05 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
MMPRINCE4000
  • CAR REPAIR CONTRIBUTOR
  • 8,548 POSTS
Remove and clean the IAC.

Generally a high idle is a vacuum leak. Check all the vacuum lines for cracks.
They get brittle with age and constant heat cycles, abd can crack very easily.
Nov 16, 2008 at 8:08 AM
Advertisement