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Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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August 13th, 2019, 09:57 AM
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Join Date: Aug 2019
Posts: 3
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Towing with 6.2l
Just bought my first Ford and so far love. It's a '15 F250 with 6.2 My only issue is towing. Pulled 4500lb trailer on highway, and truck will not shift into 6th gear. Cannot hold speed even on flat road. Below 60mph it's fine. Highway speeds it falls flat on its face. I have to add that the truck has a 4" lift and 35X12.5 tires. Does anyone else have same issue? I expected a little more out of this engine.
Thanks in advance.
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August 13th, 2019, 12:28 PM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,162
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Liked 116 Times in 112 Posts
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Are you using tow/haul mode?
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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August 13th, 2019, 05:17 PM
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Join Date: Aug 2019
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Yeah, tried that. Made it worse. Would stay in 4th gear with the occasional upshift to 5th, but only on flat or downhill.
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August 13th, 2019, 09:16 PM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,162
Likes : 2
Liked 116 Times in 112 Posts
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What axle ratio do you have? Have you checked your cats for excessive backpressure?
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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August 13th, 2019, 09:31 PM
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Join Date: Aug 2019
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3:73 gears. Havent checked cats. Only had the truck for 1 week. I will check that. Thank you. Never owned a 6.2l so dont know what to expect.
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August 14th, 2019, 07:56 AM
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Join Date: Jun 2009
Location: Northwest Georgia
Posts: 15,072
Likes : 36
Liked 188 Times in 170 Posts
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buddy experienced something of the same
a fuel filter change made it run like new
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For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.
 
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August 14th, 2019, 09:55 AM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,162
Likes : 2
Liked 116 Times in 112 Posts
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These newer trucks don't have an easily replaceable fuel filter. It's a "lifetime" filter inside the tank.
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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August 14th, 2019, 12:04 PM
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Join Date: Jun 2009
Location: Northwest Georgia
Posts: 15,072
Likes : 36
Liked 188 Times in 170 Posts
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now that I think his was an '06, 6.0
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For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.
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August 14th, 2019, 01:39 PM
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Join Date: Jul 2012
Location: Joplin MO
Posts: 1,162
Likes : 2
Liked 116 Times in 112 Posts
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Diesels have a big serviceable fuel filter and water separator.
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2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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