Question about Toyota MR2
Posted by Anonymous on
Check all the small vacuum hoses for leakage or loos fit, check for damaged or broken air intake hose. Check if there is anything loos between throttle body and cylinder head, like broken gasket, craks or so. Idling is adjusted by the ECU and there are no screws anywhere. In most cases, lost vacuum is the reason for high rpm at idling. In some cases it's possible that an O2-Sensor or the cat is bad, and the ECU tries to adjust but get the wrong signals.
Posted on May 15, 2014
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Posted on Jan 02, 2017
The idle speed is computer controled, it is not adjustable, you most likely have sludge in the throttle valve and the idle speed control air bypass valve, clean them with carb spray with the engine running.
Posted on Sep 17, 2008
fast idle is many times caused by a engine intake vacuum leak, use a can of carb spray and spray the top of the engine for leaks, if u hit one u will hear the eng change idle speed, also look for split or leaking vacuum hoses.
Posted on May 20, 2009
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