Saturday I installed a transgo shift kit in my 99 f150 w/ 4R70W. All went well, didnt run any any problems, didnt mess with the 2-3 accumulator (comes into play later).

After everything is done I go to drive it and the problems begin. When I put it in D I get one gear (unsure as to which) and it will not shift to any other gear. I can put it in 1 and shift to 2 and it will shift fine and act normal. When I shift from 2 to D nothing happens. Once I hit about 50-60 mph when its in D if I let off the gas and give it gas again it just revs from 1000-3000 rpm and then it will actually pick up and go.

Sunday I pulled it apart to check for a stuck valve or similar and did notice that there were a few aluminum shards in the bottom of the pan. Seems like I didnt clean them out good enough after drilling the holes between the partitions. I ran out of brake clean . Anyways I cleaned everything up as good as I could. Pulled out all springs/parts I had to swap with the shift kit and put them back in making sure nothing was sticking. I put everything back together and once again....Same problem.

Anyone have some suggestions as to what could be wrong? I ordered a new 2-3 accumulator piston today and a drain plug to save time as im sure ill have to pull this thing apart many times to figure out the problem. This weekend I plan to change the piston and pull the valve body completely apart and clean it/put it back together and see if that does the trick. If not I guess a new valve body it is. I read quite a bit over at tccoa.com about these kits being horrible and known for causing problems, but at the same time I think its a bit on the BS side bc they dont have anything to support what the say but you never know.

 

Did you compare the separator plate gaskets?

 

Compare them in what way? I took the ones provided and matched it up to the guide bolt holes to figure out which one I needed. Put it up to the plate and made sure it didnt cover any holes and installed it. I also have a spare oem gasket that goes between the valve body and plate. Maybe ill give that a try next time around.