Low idle speed. Bad IAC?

Question

Can someone confirm my diagnosis before I change my IAC valve?

I own a 99 Camry 4 cylinder. Recently it's had tendency to stall from low idle speed immediately after starting. When it does this I need to hold the gas pedal down a bit for a few seconds till it would idle on its own. It was doing this only after sitting long enough to cool down a bit but not completely cold. Now it is doing it even when cold and I have to hold the gas down for several minutes before it will idle on its own.

I believe this to be caused by a sticking IAC valve which is fairly easy to change but I wanted to see if anyone would confirm this before I do so.

Thanks for your help and opinions.

Brian

Philip® · Accepted Answer

What's your adversion to -cleaning- the IAC?--- Philip @ Maximum Torque RPM

Rick Weiss · Answer

No real aversion to cleaning it.  I was expecting to need new IAC andThrottle Body gaskets so I was going to pick up a new IAC valve at thesame time.

Philip® · Answer

Oh.  Bring MONEY.

Rick Weiss · Answer

Yeah, I just read another post referencing a $210 price tag for the IAC valve. I read of several failed cleaning attempts that ended in replacement of the valve to cure the problem. Have you any tips for cleaning it? Remove it first or clean it somehow while its on the car?

Philip® · Answer

Personally, I prefer to clean IACs and throttle bodys OFF THE CAR. Reason ... I do not wish to risk fouling the O2 sensor(s) nor the A/F sensor (located after the catalyst & ... much more expensive).

Rick Weiss · Answer

Philip, Thanks for the tips and advice.  I'll try cleaning it thisweekend if I can get a break in the weather.

Low idle speed. Bad IAC?

Join the Discussion

Didn't find your answer?