Hesitation between shifts...??? - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 08-29-2007, 02:46 AM Thread Starter
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Hesitation between shifts...???

Hello All,

I am new to the forum and would like to say hello and ask a question that may be addressed here already.

I have a 2008 F250 s/c LB with the 6.4L Powerstroke Diesel.

Is there a way to tune out the shift hesitation between shifts ? I have heard it was done for towing reasons to save the ransmission.

Can someone point me to an existing post or clarify what is going on with the shifting?
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post #2 of 8 Old 08-29-2007, 03:22 AM
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Hmm not sure on the new trucks but usually thats not good on a transmission. Usually you want firm crisp shifts creates less friction and heat on the tranny. Might want to have the dealer look at it.

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post #3 of 8 Old 08-29-2007, 04:28 AM
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post #4 of 8 Old 08-29-2007, 04:41 AM
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Do a search on here for transmission relearn. There is plenty of info out there on this subject. Basically you need to disconnect your battery cables for an hour or so and then put the truck through a specific routine so the tranny "learns" your driving style and adjusts accordingly.

What you describe is a sloppy shift and is not good for the tranny.
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post #5 of 8 Old 08-31-2007, 02:55 AM Thread Starter
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I read something on here before about engine defueling, does anyone know where to find the post or a solution for the hesitation ?

Thanks
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post #6 of 8 Old 08-31-2007, 01:04 PM
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post #7 of 8 Old 08-31-2007, 01:08 PM
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Defueling is kind of a failsafe for the turbo. On a 7.3 if you reach 25 psi of boost the engine will defuel to try to help prolong the turbo. Thats not your problem.

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #8 of 8 Old 09-03-2007, 10:41 AM
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What you are feeling is torque reduction on shifts. It is done on all new Ford vehicles to eliminate some of the drivetrain noise. With the SCT, we can eliminate the Torque Reduction and firm up the shifts. The shifting is so much better with a tune installed. There is the option for a transmission only tune on the new SCT. Just that alone makes the truck a better drive.
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