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6.4L Power Stroke Diesel Engine fitted to 2008 - 2010 F250, F350 and F450 pickup trucks and F350 + Cab Chassis

slow to move

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Old Aug 26, 2009 | 04:53 PM
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2kmelat
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slow to move

i have a 08 350 and when i step on the gas there hesitation until it hit 2500 rpm. i have notice it getting worse lately. the hesitation is bad until 2500 rpm and then all the power u want.
 
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Old Aug 26, 2009 | 08:46 PM
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how many miles on the truck? Do you have the current flash on the pcm? What about white smoke especially when damp outside.

Just trying to narrow down what is happening.
 
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Old Aug 27, 2009 | 05:23 AM
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Yep, need more info. There is a 3-4 second delay on the big power when you take off but using the word "hesitation" brings up a few other things.

Check out the 6.4 Diesel Tech Folder and read through the TSB section.
 
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Old Aug 27, 2009 | 06:30 AM
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I have 36000 on it and they reflash it a few mounths ago the truck runs great never smoke its just a take off there is no power when i stomp down on the gas until about 2500 to 3000 rpm. they are try a map sensor ill be getting it installed friday.
 
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Old Aug 27, 2009 | 06:52 AM
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These trucks have a terrible delay in throttle response on the initial take off. Its just built in to the programming for emissions and it seems some trucks are better/worse than others. If you have owned the truck for that many miles and are just now noticing this Im guessing something has changed on your truck or else your driving style has changed (due to towing or something like that is what I mean).

keep us posted if the MAP sensor (or something else) fixes the problem for you.
 
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