stock 6.4 hard shifting at 40 mph - Ford Powerstroke Diesel Forum
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  #1  
Old 05-20-2011, 08:21 AM
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stock 6.4 hard shifting at 40 mph

my truck shifts bad around 40 is this normal??
thanks
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Old 05-20-2011, 11:42 AM
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No, not on a stock truck.
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Old 05-20-2011, 11:46 AM
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When you say bad do you mean hard?

I know mine shifts kinda hard but it is normal
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Old 05-20-2011, 01:12 PM
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idk if its hard or what but you just feel it more than any of the other shifts.
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Old 05-20-2011, 01:33 PM
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I have 171k on my truck and when i get on it it shifts harder then when i drive it normal. I have road in a few 6.4 and they all have done that.
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Old 05-20-2011, 09:29 PM
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thanks for all your help!

it shifts perfect when i get on it. its only when i am accelerating slow that it does it the slower it is the worse it does it???
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Old 05-22-2011, 09:11 AM
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Mine lurches a bit when the torque converter locks right around 35mph on partial throttle. Is that what you're referring to?

When it locks, the truck is a whole different beast...
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Old 05-22-2011, 11:27 AM
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not sure

ill see if it does it around 35 but it just feels weird and you can feel it buck or search. thinking about taking it in
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Old 05-22-2011, 12:14 PM
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If you are questioning it i would say the best thing to do is take it to a well known tranny guy and have him drive it.
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40 mph, 6.4, hard shifts, stock

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