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Truck stalls when stoped

Tiny
JOECOOLMAN16
  • MEMBER
  • 1979 FORD F-250
  • V8
  • 4WD
  • AUTOMATIC
I have a 1979 f250 with a 460 and when ever I go to stop when the motor is worm it stalls out
Saturday, August 13th, 2011 AT 10:05 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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Saturday, August 13th, 2011 AT 10:54 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,873 POSTS
IAC? I don't think we knew that term in '79.
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Sunday, August 14th, 2011 AT 1:26 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
LOL, You got me Doc. Wasn't paying attention. Most likely a carb issue. Could be leaking vacuum or flooding.
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Sunday, August 14th, 2011 AT 1:29 AM

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