No forward gears..

[tomford]

hey guys i have a truck with a th400 and it has no forward. the fluid is reading on the dipstick as full. it goes into rev. and feels like its goin into forward a little, like a lurch forward slightly, it has no forward at all, d 1, 2, 3 nothing. and like i said rev goes in fine. any ideas?

thanks
tom

 

[dabomb6608]

My 700R4 did that and we had to pull it and get it rebuilt Hopefully for you it isnt that severe but just a thought. Not that familiar with the th350/th400's

 

[imiceman44]

hey guys i have a truck with a th400 and it has no forward. the fluid is reading on the dipstick as full. it goes into rev. and feels like its goin into forward a little, like a lurch forward slightly, it has no forward at all, d 1, 2, 3 nothing. and like i said rev goes in fine. any ideas?

thanks
tom

Yeah your tranny is shot.
The reverse is a different part that is why it could still work when forward gears go.
Last time my tranny went out and I was 30 miles away from home I drove in reverse 30 miles to get home.

 

[tomford]

Now would sitting cause it to go? it worked fine a few weeks ago but the truck has been sitting there and now i went to move it and nothing

 

[max 02]

Now would sitting cause it to go? it worked fine a few weeks ago but the truck has been sitting there and now i went to move it and nothing

I got a 79 1/2 ton 4x4 from a guy that parked it cause the trans quit, it was a turbo 350, the truck sat for at least 3 years.Long story short, he gave it to me, I towed it home and started to work on it. A little new gas and it started right up, SWEET. I tryed to drive it no go, but it kind of had reverse. So I took the pan off and changed the fluid, the filter had a hole in it So I filled it up and the dam thing worked. I drove it arond for 3 months and I couldn`t get it to slip, worked good. I sold the truck for 600.00. Not to say this will work for you but it`s worth a try. Good luck! Have Fun!!

 

[imiceman44]

Now would sitting cause it to go? it worked fine a few weeks ago but the truck has been sitting there and now i went to move it and nothing

If it sat for a long time after not having problems when parked, the first thing I would do is change fluids and filters.
Most cars I bought worked fine after fluids got changed, including the brake fluids that every one ignores.