I have 94 Dodge ram.. when my is cold it shifts and drives fine. When my truck starts to warm up it won't shift.. I have no gears .. I'm mean I lose reverse drive etc..I changed the fluid and filter.. and there was no change in what it was doing.. what could it be...

 

Find anything interesting in the pan when the fluid/filter was changed?

Welcome to DF! Going to move this to the second gen ram section for ya.

 

There wasn't anything in the fluid . But on the magnet they said was full of metal dust. But they said it was normal for that age of vechile

 

How many miles on it?

When it warms up, will it move at all? Or does it act like its in neutral?

Verify fluid level. Get the trans warm, and check it in Neutral. Checking in park will give an artificially high reading.

 

I've done all that.. the fluids check out good..and it acts like it is in neutral..

 

Unfortunately, I think that means its time for a rebuild. First three gears (and reverse) are completely mechanically controlled, no electronics involved.....

 

Awesome.. .. thanks for your help.. I appreciate it

 

Sorry to be the bearer of bad news...... Good Luck, and let us know what you learn.

 

Do a pressure test!
http://www.atraonline.com/manuals/se...0/2000_154.pdf

 

While heres an update .. I had the transmission rebuilt and got to drive it for a total of 2 days just for it to mess up again. Went back to the shop and they said that the overdrive wasn't getting any fluids.. okay.. but this was after they tried to say my rear end was locked up and that was the reason the tranny went out again.. turns out they didn't take off the parking brake. Now that I have my truck back again it still slips from 2nd to 3rd and the front seal is leaking. Plus they lost one of the bolts to my drive shaft and put one in that has 4 washers behind it and they also put weights on the top and bottom of my drive shaft.. I mean the transmission just looks a whole lot smaller then my old one.. so I need help on a good transmission place in okc.. please help