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if it has a 22re engine, low coolant could be the culprit. a bad head gasket (which actually also causes low coolant) could be the problem too. This model year Supra came with a 5M-GE engine and the idle hunt is most likely an air intake leak. check for air leaks from the air filter box all the way to the throttle. you need to check all the joints in that air duct. if air is getting pulled into that duct, the map sensor info to the ecu will be wrong and the computer will try to adjust the engine idle. found 5 holes in my air duct and car wouldn't even idle till it was fixed

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โˆ™ 2005-12-27 12:51:01
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Q: Idle on 1985 supra oscilates between 1100 and 2000 what can cause this?
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