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Old 05-25-2012, 04:18 AM
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Missing at 1400-1700 RPMs

Hello! I'm driving a late 1999 F250 7.3 E4OD 4X4 Off Road with 273,000 miles. Gong down the road at about 55mph, which depending on the hills is about 1400-1700 rpms, my truck acts like it is sucking air or has water in the fuel. Any ideas? I replaced the fuel filter and I am good on oil. It is only at this rpm range. I can back off and it evens out or I can speed up...
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Old 05-25-2012, 07:29 PM
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Doesn't your truck have 4r100?


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Old 05-25-2012, 07:52 PM
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I have an 02 F350 and mine is doing the same thing. It seems to be a little worse if the truck isnt warmed up yet. I havent been able to figure mine out either.
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Old 05-26-2012, 08:48 AM
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Quote:
Originally Posted by early99psd View Post
Doesn't your truck have 4r100?


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No, pretty sure its E4OD.....
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Old 05-26-2012, 08:49 AM
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Quote:
Originally Posted by Lando302 View Post
I have an 02 F350 and mine is doing the same thing. It seems to be a little worse if the truck isnt warmed up yet. I havent been able to figure mine out either.
Yeah, if I let it set for about 15-20 minutes it seems better but it's still annoying.....
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Old 05-26-2012, 09:45 AM
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when was the last oil change? was there any junk in the fuel filter when you changed it? might be water in the fuel.
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Old 05-26-2012, 10:34 AM
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All superdutys have the 4r100


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Old 05-26-2012, 07:50 PM
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Quote:
Originally Posted by miked. View Post
when was the last oil change? was there any junk in the fuel filter when you changed it? might be water in the fuel.
Um... The oil I believe was changed just before I purchased the truck a month ago... The fuel filter looked dirty but I didn't see any water...
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Old 05-26-2012, 07:54 PM
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Originally Posted by early99psd View Post
All superdutys have the 4r100


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Hmm. You're right they did. I guess I do have the 4r100....
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Old 05-27-2012, 08:26 AM
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check the valve cover harness and run some diesel kleen thru it. if thats not it, get it scanned. don't throw parts at it. i made that mistake once, won't do it again
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