found my tranny problem

[jdog771]

So i was having issues with my trans like it was going into neutral when shifting from second into third and just revving out. I changed all the electronics inside fluid and filter and nothing changed so yesterday i took my expedition to my buddys house because he said i could have a trans out of his 97 expedition. Mine is 2000 so after looking online i saw that i would have to change all the electronics inside. After i get the transmissions setting side by side take the valve body off of mine I see right away that the retainer for the 2-3 accumulator piston was bent up so i pulled it out and the spring was broke into pieces. The piston still looks good and moves up and down but i went ahead and swapped everything over to the 97 trans. The 97 trans has 140,000 miles and the fluid looked very good. It came out of a ex k9 unit so im assuming it was flushed regularly. The bad with the trans is that we had to drill out 4 of the 6 bolts that hold the transfer case adapter on but we did get it on last night. Todays job is getting 3 of the 4 exhaust studs out of the manifolds that broke off and then putting the trans back in.

 

[jdog771]

update: i got the 97 trans into my expedition last night and took it for a test drive and it does the same thing as the one that came out . It goes to shift into third and just revs out. The trans i took out had a damaged ring on the 2-3 accumulator piston as well as the sprink broken into pieces so i figured that would be the reason it would not shift into third. I know the trans i got being a 97 i had to change all the internal electronics over to make it work in my 2000. before changing trannys i put a new solenoid pack as well as tcc solenoid and the hard wiring harness, i never changed the main black plug insert nor the sensor right behing the shifting linkage but i woyuldnt see that being the problem with the 2-3 accumulator piston and spring being bad in the old trans. Any ideas?

 

[stamp11127]

Did you swap the valve bodies?

 

[jdog771]

no i did not swap the valve bodies. Im also noticing a shutter in reverse