So i recently bought a 97 ram 2500 club cab lb and the automatic transmission that has 20000 miles on it is slipping when not in lockup. you have to rev the engine to 2000 rpm to go anywhere. when i put the truck away it was fine and i started it today to put some new goodies on it and now this. I know there are lots of threads on this but not many with a completely stock transmission

 

Put it in neutral for a minute after starting. The fluid can drain back and it takes a minute or two to pressure back up. It does not pressurize in park.
Does the fluid smell burnt, or appear dark?

 

Fluid smells fine and is not burnt. It hasnt done this in the past. i drove it about 5 miles and when i got home i was at 2300 rpm trying to go up my driveway. thanks for the reply

 

Accumulator in the VB or a clutch pack has lost the seal on a piston !!!

 

So when I pull the b*tch out what should I do while I'm in there. Just fix it or completely rebuild it again.
My a$$ is hurting from this transmission

 

I started the truck today. fluid smelled burnt and was a little dark for my liking. but it did not slip at all. was 100 percent fine? Going to flush the fluid and adjust the bands and limp er along

 

Often won't slip when cold. Thicker fluid grips and seals better.
My guess is your forward clutches are toasted.

 

will drive it tomorrow but it slipped plenty while cold yesterday.
i let it run in drive with the brake on for 10 minutes so it should have been pretty warm

 

really not the best idea to be letting it warm up in drive. . .park disengages the forward clutches. in D they should be engaged and attempting to grip.

 

i was just trying to get it warm fast so i wouldnt have to drive it up and down the road without plates
i will be sure not to next time though