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Discussion Starter #1
I have a 2000 Ford F250 Powerstroke. It has an automatic in it. The tranny was replaced with a remanufactured one about a year ago. The tranny will shift just fine until you drive it for about 15 mins or so when it warms up it will upshift very hard. Any ideas?
 

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Discussion Starter #3
The fluid looks good, nice and red, doesn't smell burnt. I dug up some invoices from the previous owner. One was for a transmission shop service and they wrote up harsh upshifts possible accumulator body.
 

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so does it sound like i need a new accumulator body or can it be adjusted to smooth out the shifts. right now it feels like and old truck with a shift kit
 
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