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Ford SD auto tranny ? |
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FREEDGUY
Orange Level Access Joined: 15 Apr 2017 Location: South West Mich Points: 5391 |
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Posted: 07 Jun 2019 at 5:46pm |
I run a 2005 F250 with 5.2,4x4 and a Reading service body. Truck has 159,000 miles as of tonight. I have noticed in the past 3 months that the tranny will drop into O/D around 45 MPH. I didn't think much about it until a slight acceleration made the engine stumble HORRIBLY until I stomped on the pedal to make it upshift. No codes on the display as of yet, but am curious of what might be coming my way besides the cam phasers Thanks
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steve(ill)
Orange Level Access Joined: 11 Sep 2009 Location: illinois Points: 77900 |
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old dirty transmission oil does funny things... I like to remove the pan, clean and replace 5 ( of the 13 quarts) every 50,000 miles... At 159K I hope the trans oil has been flushed or cleaned out at least once.. Probably ready again.. If it has NEVER been done, you got a lot of CRUD floating around the the solenoids and engagement spools. ........... and the motor is a 5.4 with Variable Cam Timing as you said.
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Like them all, but love the "B"s.
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FREEDGUY
Orange Level Access Joined: 15 Apr 2017 Location: South West Mich Points: 5391 |
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Yes, 5.4, I still have the 5.2 engraved in my head from numerous parts needs for the '95 Dodge Ram that I owned previous to this (although it got 6 MPG better performance with the same payload). Sadly the tranny was completely flushed 20k miles ago when a tranny cooling line rotted off of the radiator . That was NOT a cheap fix .Thanks for the reply,I was leaning toward an electronic issue for some reason.
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shameless dude
Orange Level Joined: 10 Apr 2017 Location: east NE Points: 13611 |
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if you are gonna drive around (like city driving) drop the tranny lever down a notch into "drive", constant slower driving will have the tranny shifting in and out of OD, soon it won't work in OD. it'll be burned up.
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FREEDGUY
Orange Level Access Joined: 15 Apr 2017 Location: South West Mich Points: 5391 |
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Shameless, my selections on the display are P/R/N/D/3/2/1. I can push a button on the end of shifter into "tow" mode but that locks me out of 5/6 gears. This issue has just developed in the past 3 months. There is no "hunting" for gears at lower MPH, once it gets into O/D at less than 40, I have to stomp the accelerator pedal to force it to up-shift.
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