2004 GMC Safari

2004 GMC SAFARI
172,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JUSTINF89
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I'm trying to set the idle on my safari van and was wondering how I can set up a tachometer to it? Thanks.
Apr 8, 2010 at 3:36 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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DOCFIXIT
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Idle not adjustable is controled by PCM via Idle Speed Controler
Apr 9, 2010 at 11:02 AM
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JUSTINF89
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  • 22 POSTS
What would cause it to idle too low most of the time? Is there a way to hook up a tach anyway?
Apr 9, 2010 at 12:12 PM
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DOCFIXIT
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The IAC valve maybe carboned up remove and clean with carb cleaner passageways too. If no check engine light on then carbon likely. Also look for any vacuum leaks. as for TACH not sure check with like Summit see what they have.


https://images.2carpros.com/forum/automotive_pictures/198357_Graphic_443.jpg

Apr 9, 2010 at 2:03 PM
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JUSTINF89
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Thanks for the help. I will try and clean out the IAC with some carb cleaner or something. May I as where you obtained that picture?
Apr 9, 2010 at 5:53 PM
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DOCFIXIT
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Mitchell OnDemand.com
Apr 12, 2010 at 9:39 AM