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Old 04-11-2012, 09:34 PM   #11
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f1100turbo: great info. Thanks. Pardon my thickness though, but just what is tow/haul mode? Is that what you call turning off the O/D?

It seems to me that our truck and tranny seemed happier when O/D is turned off except when the road is fairly flat or downhill, so that's what I'll do. Not sure if it makes much of a difference with gas mileage to keep the revs down as low as possible.

I was reading on an F150 forum that one owner had a bunch of techs at his dealer's shop tell him to do the opposite of what the Ford manual said to do.
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Old 04-11-2012, 09:37 PM   #12
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BTW, when I bought the truck used (dealer lease return), it didn't come with an owner's manual and I never bothered to find one. So, I can't look up what it says to do. Even then, some Ford techs have said to do the opposite. Argh.
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Old 04-11-2012, 09:41 PM   #13
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My 05 Silverado has it on the end of the shift lever and I NEVER pull anything with the OD engaged. Trannys are too expensive to have rebuilt. Also have had Mobil 1 synthetic put in the tranny and rear end. Have used it in every vehicle I've owned since 1978 and Smokey Yunick suggested it when I talked to him in Daytona.
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Old 04-11-2012, 09:41 PM   #14
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As I said before tow haul mode does two things
1) it prevents the torque converter from fully locking up.
2) it raises the shift point rpm to a higher level to build more rpm before shifting.
And on Chevy diesels with Allison trans it provides engine braking to slow vehicle.
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Old 04-11-2012, 09:43 PM   #15
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Originally Posted by f1100turbo View Post
Funny ! the two 1993 f250's in my shop both have tow haul
Mode on shift lever?
The button on the end of the shift lever on older fords just locks it out of od, they only have (park-reverse-Neutral-overdrive-2-1) on the shift lever itself, so the button just locks out od, It seems to me it would have made more sense to have it like the Chevys and have all 4 gears on the lever then the tow\haul button to raise shift points and pressures,
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Old 04-11-2012, 09:44 PM   #16
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Originally Posted by f1100turbo View Post
Funny ! the two 1993 f250's in my shop both have tow haul
Mode on shift lever?

either somebody transplanted the shifters or your mistaken, its Overdrive. the tranny in your 1993 is aode first year for the electrinic od and since I have 7 92 to 97's in my fleet that all say overdrive.......im gonna cry foul
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Old 04-11-2012, 09:46 PM   #17
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Originally Posted by myredracer View Post
BTW, when I bought the truck used (dealer lease return), it didn't come with an owner's manual and I never bothered to find one. So, I can't look up what it says to do. Even then, some Ford techs have said to do the opposite. Argh.
Here's is a link for free online manuals
http://www.motorcraftservice.com/vdi...d=&kevin=rules
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Old 04-11-2012, 09:47 PM   #18
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Originally Posted by f1100turbo View Post
As I said before tow haul mode does two things
1) it prevents the torque converter from fully locking up.
2) it raises the shift point rpm to a higher level to build more rpm before shifting.
And on Chevy diesels with Allison trans it provides engine braking to slow vehicle.

you are correct here but not till 2004 on the fords man.......prior it just locked out overdrive.....
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Old 04-11-2012, 09:48 PM   #19
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New 5-Speed TorqShift Automatic Gives Customers More of Everything | Ford Motor Company Newsroom
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Old 04-11-2012, 09:54 PM   #20
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Foul accepted! Sorry 2 o3's
I stand corrected ........
Its tuff to remember my fleet when I'm spouting off at the mouth.

As long as were talking fleet I might as well hi jack this puppy
1 2007 gmc 1500 4x4 tow haul
1 2005 Chevy 2500 hd tow haul
2 2001 Chevy 2500 hd tow haul
2 1993 f250 non turbos
2 1996 k2500
1 1993 f350
2 2003 f250 turbos
1 1989 c2500
1 1995 c1500
1 1998 r2500
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