2000 Dodge Ram likes to die in reverse

ALL connectors matched up? And tranny is the original? Answer these and I will look at it in the am!

On some mopar applications, I have heard of a restricted cooler for the transmission cause this condition. You can temporarily by-pas it with rubber hose for a test.

It is possible that a wire is being stretched. IF you can rock the eng/trans in the way that it torques in reverse and make it stall, it will help confirm this.

You can try swapping the crankshaft position sensor with the old one if you still have it.

Buckyash wrote

" have took the truck to a repair shop they hooked it up one a genises (spelled wrong) Scanner and they could not find any trans codes or anthing wrong with and sensors. Everything seems to be working fine from the electrical part also did a test where he put truck in Drive and used the Scanner to shut the vehicle off. And says torque convertor was working fine. Vehicle stills dies in reverse what else could it be mabe a Safety neutral switch or what else u have in mind. Dont think theres blockage in lines either I have put on atleast 100 miles on the truck since this problem has came up"

Nuetral safety should not cause a stall. But prevent or allow a start.

Did you try:
Manually rock the eng/trans in the way that it torques (moves/shifts) in reverse and see if it makes it stall. It will take a couple guys to do this to get leverage.