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Stupid question on C5 idle

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Old Mar 19, 2007 | 11:45 AM
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Default Stupid question on C5 idle

What is the average idle speed on C5? Just bought 2002 C5 for wife and the idle seems high to me at 800 rpm.
Thanks
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Old Mar 19, 2007 | 11:47 AM
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My stock 2002 with automatic idles at about 600 rpm (warmed up, in Drive).

Last edited by Bill Baird; Mar 19, 2007 at 11:57 AM.
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Old Mar 19, 2007 | 11:47 AM
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Thats about right. Mine will idle between 800-900 rpms depending on if my a/c is on or not and the temp. outside.
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Old Mar 19, 2007 | 11:55 AM
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It will go down after it warms up. It should anyway.
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Old Mar 19, 2007 | 12:11 PM
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Thanks for the quick response! Well if this is the correct idle then my problem is something else because it acts like it wants to "run-on" or diesel when it shuts down. Their is a rattle under the car after it shuts down that I thought might be contributed to fast idle. I guess it may be in the clutch or throwout bearring.
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Old Mar 19, 2007 | 12:27 PM
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do you have a 6spd or auto. My 6spd idles at 800rpm
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Old Mar 19, 2007 | 12:41 PM
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If you have a 6spd, hold in on the clutch when you turn the car off -- does it still make the rattle/dieseling sound?
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Old Mar 19, 2007 | 05:06 PM
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Originally Posted by jedblanks
If you have a 6spd, hold in on the clutch when you turn the car off -- does it still make the rattle/dieseling sound?
Late response just got off work.
It is a 6spd and no I haven't tried it yet but I will.
Not sure where its coming from exactly. Thanks for the idea.
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Old Mar 19, 2007 | 05:24 PM
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do you have cam ? maybe a reason for the higher idle
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Old Mar 19, 2007 | 06:18 PM
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You need to have the clutch in when you shut it off.

Even in the owner's manual it states to put the shift lever in Reverse with the clutch pedal pressed in, turn the ignition key OFF and remove the key, then release the clutch.

Of course they don't say why do this just to do it.
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Old Mar 19, 2007 | 06:29 PM
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Originally Posted by Jet-Jock
You need to have the clutch in when you shut it off.

Even in the owner's manual it states to put the shift lever in Reverse with the clutch pedal pressed in, turn the ignition key OFF and remove the key, then release the clutch.

Of course they don't say why do this just to do it.
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Old Mar 19, 2007 | 08:15 PM
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2001 Coupe settles down at a smooth 500 RPMS at idle when warm and A/C off.

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Old Mar 19, 2007 | 09:20 PM
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Once warm, I believe my car idles at about 600 rpms.
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Old Mar 19, 2007 | 09:43 PM
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Originally Posted by JDs00PewterCoupe
Once warm, I believe my car idles at about 600 rpms.
Same here.
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Old Mar 19, 2007 | 10:37 PM
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My 04 idles dead on 500 its an Auto, funny tho u asked this question b/c i drove my 04 dodge ram hemi and it idles about 700 and i thought it was a bit high
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