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Engine revving at stop

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Old 28 Apr 2013, 08:36 am
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Join Date: Apr 2013
Posts: 29
Default Engine revving at stop

Yesterday while traveling at around 30 mph I came to a red light. I stopped, but the engine seemed to be reving and if I stepped off the break it lerched. Once the traffic started moving, it seemed my car was maintaining on its own as I wasn't pressing on gas. RPMs running between 1-2. 1.5 while traveling, but sometimes going up to 2 when I slow down

At the next light, no issue. It really seems to come and go.

Any ideas? I just had the timing belt replaced. Could something be going on there?

I have a 2005 PT Cruiser Turbo Convert. 97600 miles
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Old 28 Apr 2013, 09:06 am
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Join Date: Sep 2001
Posts: 27,758
Default Re: Engine revving at stop

Could be a dirty or malfunctioning Idle Air Controller (IAC).

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Old 28 Apr 2013, 09:47 am
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Join Date: May 2012
Location: Mustang, OK
Posts: 1,213
Default Re: Engine revving at stop

Or a vacuum hose that came loose.
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Old 28 Apr 2013, 09:52 am
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Join Date: May 2012
Posts: 1,354
Default Re: Engine revving at stop

Or a dirty and sticky throttlebody :-D
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Old 28 Apr 2013, 12:33 pm
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Default Re: Engine revving at stop

It's more likely IAC as CREWZIN said. Remove and clean.

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