So this has been a problem since I got my truck, but I have always just assumed it wasnt anything wrong per say just how mhy truck is.

While on the highway for the most part, especially going up hill, if I give it too much gas too fast, the transmission basically slips and its like it tries to downshift and shift back up at the same time and the whole truck shakes, like it choking on gas or something. I can make it do it at lower speeds if I stomp on it. But basically I can only give it gas o a limit. It really isnt a problem until I am on the highway, and it is really hilly here in the upstate of SC and so I dont use cruise control much because when i go up a hill it will slip like that, and this makes me think it is a problem.

My lil bro, who is a chevy guy mind you, says its some sensor in my rear diff or something that tells my trans when to shift and how.

Anybody else experience anything like this? Would an Xcal tuner help? Or is this a real problem?

 

bump

 

have you ever done a filter change and flush? worth a shot hows the fluid level? smell burnt bad?

 

while this thread has everyones attention, how much fluid does a mt 2.5 take? And im under the impresson that dextron is best for the manuals

 

use ATF for our trannys. That is it. I am running Royal Purple in mine right now, but I am going to switch it back to regualr Motocraft ATF, because it in the winter it is sometimes hard to get into gear. I think the weight is too thick.

 

I have had the trans flushed twice since ive owned and I assume the fuel filter has been changed, however I dont do it myself, so I guess I need to be more proactive with it I suppose. So I should use Motorcraft ATF? Is it thinner I guess? Is this something that will blow my transmission? As long as I can keep it from shifting like that it should be alright for now I assume. None of you sound like its a big issue.

 

I'd use what the owner's manual suggests for fluid. Mine is Mercon, but my truck is older. Ask Ford, or a parts store.

 

i have shifting problem to i have taken it to ford and they they have put a new trans in and still does it and they cant seem to find out what is doing it so if you find something out let me know

 

It could be something with the Overdrive, next time turn it off and see if it helps.