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  #1  
Old 03-14-2011, 01:59 PM
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High Idle V-10

I have an 01 Excusion with a V-10. I have been chaseing a high idle issue for a while now. Warm idle in gear is about 850 rpm in gear and 1000 rpm in neutral. I dont think it is the IAC valve. I removed and cleaned it and there was absolutly no change. It moved quite freely and worked properly. The idle is also very consitent. No flucuations and the idle is very smooth.

How about a brain storm of all the causes for a high idle and this weekend I will check all of the ideas until I find the solution. (starting with the cheapest of course!). Thank you for all for the sugestions!
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Old 03-15-2011, 07:49 AM
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Is your tach gauge off ?

what does it show when the key is on, but the engine is not running?

Also, a vacuum leak can do that. Or, someone cranked down on the idle stop on the throttle body.
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Old 03-15-2011, 05:21 PM
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I asked the same question a week ago or so, and was told that's somewhat normal for a V10. Mine runs up to about 1700 on start up, hovers about 1200 but settles down to about 800 or so when it gets going.
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Old 04-07-2011, 08:18 AM
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Mine stays up at about 1000 even fully warmed up.
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Old 04-07-2011, 05:06 PM
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My 2011 idles at 600 rpm.
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Old 04-07-2011, 09:54 PM
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Dad's f250 v10 idels a 1000 slows down sum in D and dosen't seem to bother shifting into gear or driving, haven't found any thing wrong.
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Old 04-07-2011, 11:14 PM
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Mine when it is warmed up idles around 665-667 while in D. Sometimes it's at the number of the beast.
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Old 04-08-2011, 12:06 AM
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My 00 excursion idles around 1000 and 800 in gear I think it is high I am gonna start looking into this myself
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Old 04-08-2011, 07:32 AM
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Keep one thing in mind, the dash tach isn't exactly the most accurate...

If you have a scanner like the SCT X3, pull up the RPM pid.
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Old 04-08-2011, 03:15 PM
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what rpm should you be running at idle? Most of my cars/trucks sit at or just below1000k in Pa.
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Old 04-08-2011, 07:55 PM
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The 2 valve V10's seem to idle a little high. My 2000 always idled high, but the 2005 (3 valve) that replaced it is a bit lower, idling around 600. My 2003 F350 V10 idles high as well, in the 800-1000 range. My 2003 F550 V10 idles higher than the 2005, but not nearly as high as the 03 F350 (yes, that's 3 V10's currently in the family ).
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Old 04-08-2011, 09:18 PM
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My 2008 idles at about 600 in gear when warmed up. I read this off my ScanGauge 11.
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Old 04-08-2011, 09:18 PM
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