Trans Problem!
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Joined: Apr 2012
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Trans Problem!
I own a 2005 f-250 superduty with the 6L diesel. Just recently when I leave to work in the morning I notice the trans shifts slow through the gears and when it does start to shift it will start slipping then kinda vibrate for a few seconds then finally shifts into the next gear. It will do this through all the gears until I get up to speed on the highway. After it warms up it shifts and drives great until I let it sit for around 8hrs or more. I really hope I don't need a new Transmission considering I bought this truck as is from the dealership just a little over a month ago. I have checked the trans fluid it is full, I even drained all the fluid and replace with new and it still does the same thing. Any help will be gladly appreciated. Thanks
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Joined: Apr 2012
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Guess I shouldn't have said I drained all the fluid since I know it will still hold most of it in the torque converter. I measured the AT fluid that I drained and it was 10 quarts. I refilled with Mercon SP. I was told there are no aftermarket ATF available for that transmission and it has to be Motorcraft Mercon Sp. Don't know if that was a sales pitch or the truth but I bought it anyways just for a peace of mind. Hopes this helps and thanks for the reply.
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TheHungryTubist
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wildstang
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