trans problem Help! Sled pull tomorrow!

[djms]

My truck is giving me a p0768 code. It is going into third gear whenever I try to lean into it, if I step on it in first it will make a popping sound and it feels like it gets revved up in neutral and then dropped into gear but it goes into third and stays there until I reset it. I replaced the pressure switch manifold this evening and same problem. Any Ideas? Thanks

 

[RENODMAX]

Yea get rid of that purple trans

 

[RENODMAX]

D solenoid. I'd take the vb out and make sure the valves are happy and free. Why did you buy a new pressure switch? Did this happen before or after you messing with the vb?

 

[djms]

I was told that this might be the problem but this is the first time that is has happened. Efi live says something about "shift solenoid d". Is it possible that this solenoid can go bad?

 

[Mike L.]

I was told that this might be the problem but this is the first time that is has happened. Efi live says something about "shift solenoid d". Is it possible that this solenoid can go bad?

Not likely. Most common problem is PSM. ( pressure switch manifold )

 

[RENODMAX]

Did you get new o rings for it and make sure they are seated correctly? Also as I asked did this happen before or after you messed with the VB

 

[djms]

This happened before I and I put a new pressure swtich manifold in to try and correct the problem, but no I didnt get any orings.

 

[RENODMAX]

It shouldve had O rings with it IIRC. If not did you reuse the old ones?