1993 Toyota Supra Repair Question
Topics covered: Black smoke, Engine, High idle.
Mileage: No information provided.
Mileage: No information provided.
Asked on October 9, 2008
1993 Toyota Supra high idle
Engine Mechanical problem
1993 Toyota Supra 6 cyl Two Wheel Drive Manual 205000 miles
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
1993 Toyota Supra 6 cyl Two Wheel Drive Manual 205000 miles
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
Answer
Replied on November 16, 2008
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.