700r4 problems. 6.2 Diesel

[dchough]

Hey everyone.

Thanks a lot for helping me with my last problem. I replaced the lift pump like you all said, primed the system, and my '82 6.2 fired right up. You guys on dieseplace and here on 67-73chevytrucks are awesome!

Now onto another problem... My 700r4 shifts REALLY late.

1-2 **** occurs at 30 MPH on the dot every single time. The 2-3 shift occurs at 43 mph every time. I have never had a 3-4 shift, even at 65 on the highway. Letting up on the throttle DOES NOT produce an up shift. The 1-2 shift is also very hard -it jolts into 2nd. Less so with the 2-3 shift. Once the shift is made, stomping on the pedal DOES NOT produce a downshift.

The tranny fluid is a nice red. Doesn't smell new, but doesn't smell burnt either. It might be a little low, but should not be enough to cause such problems (or at least I think )

I have searched for weeks on this problem and I have narrowed it down to:

1. A bad TV Cable
2. Stuck valve
3. Bad governor

The 1-2 shift at 30 mph would mean its shifting at full line pressure, right? I feel like simply loosening or tightening a cable couldn't fix the shifts when they are EXTREMELY late, or could it? Am I looking at probably replacing the TV cable as opposed to adjusting it?

Also, what the hell is a stuck valve? It involves dropping the pan and cleaning the insides, right? Wouldn't a stuck valve produce more irregular shifting? the 1-2 shift comes every single time at 30 MPH.

Lastly, I read once that if there is a pin or ball or something that goes bad, the 700r4 has a automatic device that will send the tranny into "late shifting mode." Any thoughts? What would cause this?

Pretty much, what do you guys think is the cause of my shifting problem, given my symptoms?

Thanks a lot more looking out for me and reading this ridiculously long post!

-Dereck