6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Newbie transmission question

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Apr 18, 2011 | 07:04 PM

#1

kjackson

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Newbie transmission question

I purchased a 2004 6.0 diesel with 45000mi on it . It is a F250 4X4 with towing pakage. While pulling my 5th wheel on level ground on freeway at 58mph in the tow haul mode it will not shift into 5th gear and it turns 2500rpm, if i take it out of towhaul it shifts to 5th and the rpm falls to 1700. Is this normal? the 5th wheel is just under 12000 loaded.

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Apr 18, 2011 | 07:11 PM

#2

rdunagan

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From: Kerrville, Tx

sounds normal to me. it normally wont shift till about 62-65 mph in tow haul

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Apr 18, 2011 | 09:40 PM

#3

Roasted7

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Quote:

Originally Posted by rdunagan

sounds normal to me. it normally wont shift till about 62-65 mph in tow haul

Yep. Keeps you in the torque range.

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Apr 19, 2011 | 09:42 AM

#4

kjackson

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Thanks for the replys good to know that is normal. The tires on the 5th wheel are only rated for 60mph so I never got to those speeds.

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Apr 19, 2011 | 09:48 AM

#5

rdunagan

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From: Kerrville, Tx

hell id get new tires. we pull our 5th wheel at 70 with no problems.

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Apr 19, 2011 | 11:41 AM

#6

69cj

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From: Middle Tn.

Even if you don't go over 60 it's nice to have a little cushion on the rating.

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