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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

idle surgin?

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Old Oct 3, 2005 | 12:20 AM
  #1  
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turboguy
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idle surgin?

So... My idle surges on occasion. it wont happen right away.. only if I let it sit there. pulling up to a stop light or driving around it never happends but if I let it sit for a minute or 3 the idle goes from around 500rpm to 1300 and it seems to get more and more crazy the longer it sits... Like at first it will go from 500 to 1000 and so on. I checked for codes this morning and I got the all clear.
 
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Old Oct 3, 2005 | 12:52 PM
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l-m tech
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From: duncan oklahoma
you could have a egr valve that is stuck open a little ,or a screwy idle air control valve.
 
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Old Oct 3, 2005 | 06:16 PM
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i just cleaned the iac.... is there a way to check the egr?
 
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Old Oct 3, 2005 | 07:39 PM
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From: western pa,zelienople
after the computer loses power for awile,it needs two minutes to learn how to idle. If your computer has lost power and not given enough time to learn, it will learn, but could take a long time. disconect the battery for at least 15 minutes , then reconect,start and let it idle for at least two minutes. If this dont help then move on.
 
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Old Oct 4, 2005 | 12:37 AM
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ya know.. it might be just that! Im gonna try it!
 
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