Question about 2003 Toyota Celica

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My celica T sport idles unevenly from 2000 to 2100 revs. either side of this it is relatively smooth. The problem seems less noticable from cold but 500yards down the road sees the problem return. Any suggestions as to what might be the cause?

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  • Toyota Master
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Intake manifold gasket is the most common cause of un-even idle.

IAC (Idle air control) motor is a small motor that adjust the idle.
In a cold AM,start up the car and turn on headlght,high beam,ac and radio.

Look for the IAC to see does it back down the idle as you shut off one item as a time.

IAC can be lube and save.


Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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