Transmission sticking in 2nd gear

[Hollywood]

Ok, you went from 50,000 miles (if the dealer was honest with you about the fluid change at that point) to 113,000 miles on the same fluid. I can almost assure you that your vavle body is gummed up with tarnished fluid. You need to drop the pan and unbolt the vavle body, remove the vavles and thoroughly clean the vavle body. I would really recommend installing a sonnax shift kit at this time since you are into it that far and its only about another 50.00 dollars.

I had a tranny in an Explorer doing this same thing a few years ago (OK it was my fiances Exploder but.... ) and we did get by with a tranny flush and dosed it heavily with Seafoam and drove it and then reflushed it again in about 100 miles............ I wouldnt recommend this on a 1 ton dually tho.



btw........recommended fluid change interval on the E4OD is every 20,000 miles or yearly.

Thanks for the advice. I'll look into pulling the valve body and checking it out. Transmissions intimidate me some but I can always take it to a shop if I get in over my head. Also, thanks for the 20k mile info. I thought 50k was the recommended mileage change, hard lesson learned I guess. What is the recommended fuel filter change interval? And thanks again for all the info.

 

[Brad B]

Hey Hollywood, glad to see your post. I've had the same problem with my 96 f250 ever since a new tranny was installed. Left at the dealer for a week and they couldn't recreate the problem. It's been about 2 years or so now and I've about narrowed it down that it does it when coming to a brief stop after driving at highway speeds then trying to take off again.
Keep us updated on any fixes you find. I've just resorted to changing my fluid as often as I can afford it. May try the valve body deal as mentioned above but like you, I don't really care to dig into the tranny myself.