car won't idle

1992 TOYOTA CORONA
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JOH
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  • 11 POSTS
car would start and idle high, because i turn up the idle,but when i turn down the idle the car engine stop. The mixture screw is set ok. No matter what i do, it will start then stop, if i take my foot off the gas pedal.What could be the problem ?
Aug 29, 2011 at 6:59 PM
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RASMATAZ
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Clean out the idle air control valve and the EGR valve and see what happens-Also check fuel pressure
Aug 29, 2011 at 7:07 PM
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JOH
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  • 11 POSTS
what do you call the idle air control valve
Aug 29, 2011 at 7:19 PM
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MMPRINCE4000
  • CAR REPAIR CONTRIBUTOR
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Idle air valve is on throttle body and has coolant lines going to it.

It is best NEVER to sdjust idle screw, until you find problem.
Sep 1, 2011 at 1:11 PM