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Sick V-10

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Old Aug 24, 2008 | 07:29 PM
  #1  
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Sick V-10

Ranch has a 2004 F450 with a V-10. 14,000 miles. Truck runs great when it is cold, but when it warms up it starts to get really boggy, runs pretty sick. Acts like it can't clears it throat and run. Will run up to about 2000 rpm and runs terrible. Shut truck off for a couple minutes and it will run good again for a little bit, and then run like crap. Has done this several times before, all before I worked at the ranch. Last time the ford shop thought it was the fuel pump, and replaced said pump, less than 1000 miles ago. Through the summer we don't run the truck but maybe once a week, last time in the shop in March. I have my doubts about it being the fuel pump, if it is there has to be a deeper root to the problem. Any thoughts, ideas, or suggestions would be greatly appreciated.
 
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Old Aug 24, 2008 | 11:26 PM
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EGR Valve and IAC are my first thoughts. Bad coil (or coils) are second.

Cleaning the IAC would be a nice and easy place to start.
 
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Old Aug 25, 2008 | 01:37 AM
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Hmmm...maybe a fuel filter? Vacuum leak somewhere?
 
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Old Aug 25, 2008 | 06:57 AM
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Will check that stuff out, I have thought fuel filter also, and am planning on changing. Again, goes back to there has to be a deeper source to the problem as the fuel filter was changed less than 1000 miles ago. Thanks for the input.
 
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Old Aug 25, 2008 | 12:49 PM
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Clean the MAF too while you're playing around in there
 
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