Question about Toyota Corolla
Posted by Anonymous on
I .A.C. = inlet air control valve wouldn't you think it be right at front of where air goes into engine (intake) ??
Posted on Jul 29, 2016
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Posted on Jan 02, 2017
The idle air control valve is located on the back of the throttle body. It has an oval electrical connector and two torx screws holding it in. Unplug the connector, remove the two screws then lightly tap the body with a soft faced mallet to loosen it from the body.
Once you have it out and prior to installing a new valve clean the seat inside the throttle body where the idle control fits. This must be very clean! Installation is in the reverse order.
To save some cash, pull the valve out and clean it with throttle body cleaner, this usually fixes the problem for quite a while.
Good luck and hope this helps.
Posted on May 28, 2009
If it's not idling and has problems starting, it's probably the IAC motor. It's located on the throttle body. Follow the airfilter box all the way to the engine, where the rubber flex hose attaches. The throttle body should be the first aluminum part you come to. Attached to the side you'll find small little aluminum part with a small wire harness attached. Unplug it, take the IAC motor off and clean inside with carb cleaner. This should fix the problem with the idle.
Posted on Sep 11, 2009
This particular vehicle does not have an IAC valve. This is because it is equipped with ETC (Electronic Throttle Control). This means there is no mechanical connection between the accelerator pedal and the throttle plate. Instead, the throttle plate is controlled by an electric motor to control its engine speed, based on "input" it receives from the PCM. The accelerator pedal is connected to three poteniometers. Two that increase, and one that decreases voltage in a particular proportion. If they fail, the vehicle goes into what's called a "forced idle" mode of operation. Hope this helps.
Posted on Apr 23, 2010
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