Question about 2003 GMC Yukon XL

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Slow or no idol - 2003 GMC Yukon XL

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If not a vacuum line broken , cracked , or disconnected, it is probably the idle control valve or sensor. No engine light on? Check all hoses. Wiggle them while the engine is running and listen for a hiss. Check intake bolts for tightness.

Posted on Aug 30, 2010

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Posted on Jan 02, 2017

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My car dies when I drive for a short time.


Check O2/mapp sensor. Also if you can elaborate on the behavior of the engine as it stalls, is there smoke, does it race then suddenly die out or does it barely run at a very slow unsteady idol until it floods out?
Check O2/mapp sensor. Also if you can elaborate on the behavior of the engine as it stalls, is there smoke, does it race then suddenly die out or does it barely run at a very slow unsteady idol until it floods out?
Answering with as much detail as possible will help get a more definite answer.
Good luck.

Apr 04, 2010 | 1985 Cadillac DeVille

1 Answer

96 chrysler Lhs when i take my foot off the gas


idol air controler keeps car running at idol speed ,you can take it off and clean it with throttle body cleaner to get carbon off its located on throttle housing ,if this works or improves your problem at all get a new one...

Oct 01, 2009 | 1996 Chrysler LHS

1 Answer

Engine revving at idol and very slow to respond


sound like a blocked catylitic convertor, remove down pipe on exhaust and drive to confirm, also check fuel preasure regulator and delivery preasure

Jul 02, 2009 | 1989 GMC K1500

1 Answer

96 dodge intrepid 3.5 seems timing is to slow starts & runs


Replace your catalytic converter. Check your exhaust manifold for leaks aswell

Jun 29, 2009 | 1996 Dodge Intrepid

1 Answer

Car idols high at start some times, slow to


3.1 AND 3.8 ARE KNOWN FOR UPPER AND LOWER INTAKE GASKETS

Jun 24, 2009 | 2000 Pontiac Grand Prix

1 Answer

Honda CR-V - 2004 - High RPM not returning to Idol RPM ????


i'am no expert on this car, but i would chk. the T.P.S. (throutle positioning sensor) there also may be carbon build up on throutle butterfly, not letting it close completely when you take your foot off the pedel.

Jan 14, 2009 | 2001 Honda CR-V

1 Answer

When I start my jaguar, it idols at a fast speed but then as it warms up it will idol fast then slow, fast and slow and keep doing so


if it is a v12, and at idle when warm if it goes up and down then you need to rebalance the throttles, they are off balance causing the idle to raise and drop.
set the butteryflys behind the air cleaners to 2 thousands of an inch using a fella guage and make sure the linkage arms from the pedestal in the middle of the engine are set the same (one is not longer than the other)
JPTCAT

Jul 25, 2008 | 1986 Jaguar XJSC

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