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Low Idle Almost shutting down

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Old 03 Apr 2012, 08:29 pm
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Join Date: Jan 2008
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Default Low Idle Almost shutting down

I have a 2007 PCH Edition. non turbo. The last couple days i have noticed that while i'm stopped my idle is very low. Probably between 8-500 rpm. When the rpm's get around 500 it feels as if its going to die out but then suddenly the rpm's jump around 900 then stabilizes around 800 then slowly back down again. Im noticing a pattern in the idle sequence. This cant be good on the motor.Anyone Have a Idea? Thanks
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Old 03 Apr 2012, 08:39 pm
rcktpwrd's Avatar
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Join Date: Jan 2011
Location: Raleigh, NC
Posts: 1,842
Default Re: Low Idle Almost shutting down

Try cleaning the throttle body and see if that helps.

2001 PT Cruiser 5-speed; 1976 Oldsmobile Cutlass S; 1990 Chevy 454SS; 1995 Caprice Classic woody
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Old 03 Apr 2012, 08:40 pm
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Default Re: Low Idle Almost shutting down

You have and (IAC) Idle Air Controller and a (TPS) Throttle Position Sensor, both attached to the Throttle Body. Either one could be bad. Also, a lot of wondering idles are caused by a vacuum leak in one of the hoses. Check around for a bad vacuum line.
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cutting out, idle, low idle, rough

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