Question about Cars & Trucks
What make , model and year vehicle ? The idle on most vehicles are controlled by IAC - idle air control valve , by PCM - engine computer .
Posted on Dec 17, 2016
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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
I have encountered this problem also, try changing your battery. My battery lasted almost 4 year till it was the cause the shot my alternator.
Posted on Apr 10, 2009
More than likely the low idle you are experiencing is caused by a dirty IAC valve located right under the throttle body itself. It needs to be cleaned out with carb cleaner. Remove the electrical connector, the two vacuum hoses, and two screws. To put it back, use a little sealant to seal it before screwing it back together but do not get the sealant inside the IAC valve. If this 4 Runner is a V6, you may need to replace the spark plugs if old. Make sure to purchase twin electrode NGK or Denso spark plugs and gap them to .043 with a gapper.
Posted on Jan 31, 2010
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