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Old Nov 25, 2004 | 08:31 PM
  #16  
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SirHailstone
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From: Indianapolis, IN
Originally Posted by BJWinter
had this same problem with with my 1997 4.6L, except that mine would drop to 300-400rpm and die whenever i came to a stop in gear. had to replace the MAF and the IAC (silver cannister on top of the engine by the throttle body). now she purrs at 700-800rpm in neutral and just over 500rpm in gear.
since you cleaned the MAF, is it still trying to die at a low idle, or are you just questioning whether or not it should be idling that low?

-bjw
Have something similar going on with a 99 F250LD with 5.4 - It'll run when the gas pedal is being held down, but as soon as you let off, it dies. Same thing when it's in gear (AT). The fuel regulator was replaced, PCV was checked and free. It's not throwing any codes though and no CEL.
 
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Old Nov 25, 2004 | 10:52 PM
  #17  
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Sounds like a common IAC problem.
 
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Old Mar 23, 2006 | 08:42 AM
  #18  
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bamadoc
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will the IAT intake air temp sensor throw off idle too?- Bamadoc
 
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Old Mar 24, 2006 | 12:34 AM
  #19  
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It shouldn't.
 
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