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Hesitation when cold

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Old Feb 24, 2005 | 11:07 PM
  #1  
scoutpup99's Avatar
scoutpup99
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Hesitation when cold

I am using my father in laws 90 ranger with 310,000 miles on the original motor. when i fist start it i have to make sure that i keep the throttle closed or open more than a 1/4 of the way. once this motor warms up it runs fine. the only work done to the truck since new is 2 clutchs and a trans @110,000 because of poor workmanship @ 90,000 mile maint. what do i need to do to get rid of the hesitation.

Dan Pennington
1969 Scout 800A
1981 F350 4X4 Flatbed 460
1989 F350 Dually Crewcab 460
2001 Expedition
 
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Old Feb 24, 2005 | 11:24 PM
  #2  
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lurchy98
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From: tennessee
I would clean the throttle body first, since it hasn't been cleaned in 310,000 miles, if that doesn't help it I would then look at the Idle air control. Also it wouldn't hurt to pull codes either.
 
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Old Feb 24, 2005 | 11:57 PM
  #3  
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el conquistador
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im willing to bet the upper and lower intake manifolds are going to look as bad if not worse than the throttle body. so it wouldnot hurt to clean them too.
 
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