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  #11  
Old 12-05-2013, 10:53 AM
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yeah, again, hard to really say...
Didja watch the video on how to change the fuel filter?
lol, just watched it, doubt that could entirely be the problem,
but my only other suggestion is a bottle of Lucas Injector cleaner,
maybe a fresh oil change, check all fluids, air pressure in tires,
ya know, just the simple easy stuff, for now. And look at those brakes, I've heard of calipers sticking, and I had an old rusty Toyota that the parking brake rusted in the on position, lol. Had to take a hammer to it, and the brakes Good luck, I have hope for you since you say the mileage does increase when you roll a little slower.
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  #12  
Old 12-05-2013, 11:23 AM
lindboep lindboep is offline
 
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Quote:
Originally Posted by clutch View Post
yeah, again, hard to really say...
Didja watch the video on how to change the fuel filter?
lol, just watched it, doubt that could entirely be the problem,
but my only other suggestion is a bottle of Lucas Injector cleaner,
maybe a fresh oil change, check all fluids, air pressure in tires,
ya know, just the simple easy stuff, for now. And look at those brakes, I've heard of calipers sticking, and I had an old rusty Toyota that the parking brake rusted in the on position, lol. Had to take a hammer to it, and the brakes Good luck, I have hope for you since you say the mileage does increase when you roll a little slower.
I have a new fuel filter in my truck. I know how to just haven't had a chance to try
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  #13  
Old 12-05-2013, 02:24 PM
lindboep lindboep is offline
 
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Quote:
Originally Posted by clutch View Post
yeah, again, hard to really say...
Didja watch the video on how to change the fuel filter?
lol, just watched it, doubt that could entirely be the problem,
but my only other suggestion is a bottle of Lucas Injector cleaner,
maybe a fresh oil change, check all fluids, air pressure in tires,
ya know, just the simple easy stuff, for now. And look at those brakes, I've heard of calipers sticking, and I had an old rusty Toyota that the parking brake rusted in the on position, lol. Had to take a hammer to it, and the brakes Good luck, I have hope for you since you say the mileage does increase when you roll a little slower.
Also if I tow at 70 or well even drive at 70 with overdrive on it red lines. Is it maybe not shifting into the last gear?
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  #14  
Old 12-05-2013, 08:48 PM
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man, IDK, but sounds like a very reasonable assessment... I recall speaking with a Ford mechanic who said those overdrive gears won't stand up to a a lot of abuse. Hopefully you are not due for a rebuild, but it seems likely.
my only suggestion would be to flush and fill with fresh ATF, and see if that helps. But I'm no mechanic! lol Hope a few others will chime in, hang on...
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  #15  
Old 12-06-2013, 07:17 AM
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blacksnapon blacksnapon is offline
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Yup, sounds like you need another gear. Its definitely overrevving.
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  #16  
Old 10-27-2014, 05:06 PM
Mustangranch22 Mustangranch22 is offline
 
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I have personally always noticed on the 3 different powerstrokes i have had that 2000 RPM is the sweet spot for fuel economy. when you run over that regardless of auto or manual trans the mileage goes downhill fast.

Very hard to run down the interstate at 2000 rpm's without getting run over though
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