F350 Downshift problem auto trans - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 1 (permalink) Old 04-30-2009, 10:41 PM Thread Starter
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F350 Downshift problem auto trans

When I am pulling a trailer af 10,000 lbs in tow mode, I am experiencing a downshift problem. When on interstate coming into a off ramp, the drive train shudders like it just shifted though 2 gears. This is with the automatic trans. I can best explain it like being in 5 gears with standard trans, down shifting into 3rd and popping the clutch. It feels like the drive shaft is trying to torque off or bust some u joints. It only does this when pulling a load, and not all the time. I have about 10K+ miles on the truck. Have pulled trailer on two 2K trips and one 600 mile. Only does it when I touch the brake, only intermittently. I talked to the dealer when had 2-3K miles, got a blank look. Just got back from another trip, called the dealer, again no clue. Anyone have this experience and a fix so I can get back to the dealer. When accelerating there is not problem.

I am very happy with the truck. It is a crew cab, long box, doing everything I expected except for the above. I had a 2002 Ford 7.3, never experienced this down shifting issue pulling the same trailer.

Any HELP out there
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