Im in desperate need of help!!
I have replace trans on a 01 D2 (used) and still slipping and only takes reverse any thoughts what I should do?, fluids and filters have been replaced. could it be electrical? it doesnt take any gears and no weird noises.

 

Are there any trouble codes?

 

Only thing that comes on is check engine.

 

"check engine" isn't a code. that's a light. you need to get an obd2 device and whatever is stored in the various controls, probably including the transmission and braking systems.

 

At 144,000 miles my transmission worked perfectly. Like an idiot, I changed the filter and fluid, and it immediately began to slipping in 1st and reverse. The only solution was to replace it with a low mileage used one.
Moral of the story: If you have a high mileage transmission that is working fine, and you don't know if the fluid has ever been changed, don't change it!

 

if you don't follow the fill procedure as outlined in the rave manual, your transmission won't be full and may slip. you have to do the final stage of filling with the engine running and close up the autobox before you shut it off.

 

I did use the instructions and filled it up as mentioned on manual.

 

is it possible that the ECU is bad? the one under driver seat?.