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1993 Toyota Supra high idle

Tiny
93SUPRA
  • MEMBER
  • 1993 TOYOTA SUPRA
  • 6 CYL
  • 2WD
  • MANUAL
  • 205,000 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
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Thursday, October 9th, 2008 AT 12:05 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 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.
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Sunday, November 16th, 2008 AT 8:08 AM

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