Question about Toyota MR2

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My mr2 is idling too fast.i have tried all the obviousadjustments.is there some secret formula or adjustment screw im missing?i cleaned the throttlebody & the iac. adjusted the tps etc. any ideas?

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  • 94 Answers

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

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emissionwiz
  • 78267 Answers

SOURCE: nissan ga15 engine idle adjustment locations

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

  • 18 Answers

SOURCE: 1994 Toyota pickup 22RE with 121K miles

check for a air leak in you sistem, or check for aditional idle screw adjust in the another end af the accelerator propel

Posted on Nov 02, 2008

  • 1 Answer

SOURCE: Erratic Idle problem in 91 accord

THE DISTRIBUTOR WILL CAUSE THIS PROBLEM IN A HONDA TRY A KNOWN GOOD ONE .

Posted on Apr 03, 2009

emissionwiz
  • 78267 Answers

SOURCE: fast idle after warm up .already changed IAC valve

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

SOURCE: low Idle

Air Idle Control. No screw

Posted on May 31, 2010

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1 Answer

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1 Answer

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