2007 Toyota Corolla idle prm question

2007 TOYOTA COROLLA
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COROLLAGUY10
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Engine Performance problem
2007 Toyota Corolla 4 cyl Front Wheel Drive Manual 52k miles

My 2007 corolla s always idles at about 1100 rpm but lately has been idling at 15-2000 rpm. everything else seems to be running smoothly what could be causing this?
Feb 7, 2010 at 2:33 PM
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2CARPRO JACK
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Could be a vacuum leak or an issue with the Throttle system in the car.Is the check engine light on? If so have the PCM scanned for codes and get back to me with what you find.
Feb 8, 2010 at 8:19 AM
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COROLLAGUY10
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Its strange, it only was doing it when i first started the car. Now it does not do it anymore. I'd have a pcm scan it but i doubt one would so it for free so i can't right now. could my accelerator be the issue? I, replaced spark plugs a few days ago and am pretty sure everything was back in place and gapped like it should be, I highly doubt it has anything to do with the spark plugs, but could it?
Feb 8, 2010 at 9:03 AM
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MMPRINCE4000
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The plugs use crush washers to seal and sometimes you can get the washer cocked so as not to seal properly. I would remove them and check the washers.
Feb 8, 2010 at 9:37 AM
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