Question about 1994 Ford F350 Crew Cab

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My transmission is heating up and overdrive stops working should i rebuild or try a new different tranny?

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  • Mike Butler
    Mike Butler Nov 13, 2010

    Have you tried new fluid and filter first, or even checked if you have a plugged external cooler, or perhaps installing one if you don't already have one?

  • lwold08 Nov 13, 2010

    i work at jiffy lube and flushed it yesterday and it runs great until it hits 150 degrees then the overdrive stops engaging and it seems slugish and it doesnt like to kick down so i dont know exactly what to do i heard the e40d trannys go out every 30-50k and it also has a shift kit, but it recently started doing this it heated up to 180 so i flushed it then now its back and forth from 120-150 so i dont know im stuck in a rut? i dont have an external cooler and also i heard that the tranny controller causes the tranny so slowly fail ive been told to get an aftermarket one after i rebuild but i have no clue what to do



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You should have access to transmission shop in your area, call them and ask if they have the external coolers with thermostat control on them. It certainly won't hurt to try it, and if nothing else, it will be a benefit to any new transmission installed, if necessary. I think they are pretty reasonably priced, and they may even give you a break because of where you work.

Posted on Nov 13, 2010

  • lwold08 Nov 13, 2010

    would changing out the filter then flushing it again fix or might fix it?

  • Mike Butler
    Mike Butler Nov 13, 2010

    Worth a try, personally I would have changed filter when I flushed the fluid the first time.



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