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Old Nov 27, 2009 | 11:49 AM
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boulderbobo
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Question Lowered Idle Speed
Hi Guys, just recently my car has decided to drop the idle speed down to around 400-500 rpms.

Yes, I did the mandatory search but found no clear solutions.

I recently installed a LWFW and was wondering if that might have something to do with the idle speed. Strange thing is, the car idled fine for several months right after the install.

This is kind of annoying. Do you guys have any ideas?

TYIA-



Bob-
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Old Nov 27, 2009 | 11:51 AM
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check for vacuum leaks
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Old Nov 27, 2009 | 01:16 PM
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Make sure your ICV is not clogged as well.
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Old Nov 27, 2009 | 02:06 PM
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is it steady?
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Old Nov 27, 2009 | 03:36 PM
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Originally Posted by Bill Verburg
check for vacuum leaks
I need to pull the blower out and check that all the vacuum lines are connected. Thanks Bill.

Originally Posted by Stealth 993
Make sure your ICV is not clogged as well.
I cleaned it real good when the engine was out this summer. Thanks.

Originally Posted by Amfab
is it steady?
The idle is very steady by low. What are you thinking?



Bob-
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Old Nov 27, 2009 | 03:45 PM
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Well there are only few players in that game. MAF, ISV, Vaccum lines or leaks in intake. But my guess is the O2 sensor.
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Old Nov 27, 2009 | 06:34 PM
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Originally Posted by boulderbobo

The idle is very steady by low. What are you thinking?



Bob-
I had a problem with a weird idle and it was the DME relay. But it wasn't steady....
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