Question about 1992 Toyota Corolla

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Irregular idle - 1992 Toyota Corolla

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  • Anonymous Aug 12, 2008

    1986 toyota corolla. runs fine. but has ide problem. the car wont ide. otherwise the car runs fine mechanically. i have checked al the vacum hoses to see if sealed. and they are. have ajusted the idle screw and mixture screw. but stil the ide chnages from stall to high like it has a mind of its own.

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I had same problem with my '93 Ford Probe. It was a head gasket leaking coolant in the cylinder during idle but higher rpm driving would prevent the coolant from entering the cylinder due to the higher internal cylinder pressure. Check your coolant & oil for any discoloration. If coolant has an oily film or is slightly brownish or if oil is perhaps slightly milky then I would suspect a leaking head gasket.

Posted on Nov 21, 2008

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Change Vacuum valve. it is the one on top of engine connecting with a hose under the carburator

Posted on Aug 20, 2008

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More info please, I do not know where to start, when it comes to diagnosing this situation.

Posted on Aug 09, 2008

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