what kind of transmission do i have????

[flag boy 23343]

I have a 1998 dakota with a 3.9 V-6 with an auto transmission. I just bought this truck. I'm having transmission problems with it not shifting from second to third. I changed the fliud and filter and the fluid smells burnt. Does anyone know exactly what type of transmission I have? Or any suggestions. I'm also considering rebuilding if need be myself. Any suggestions would be greatly appreciated. thanks

[troy1]

You have a 42RE, take it to a shop and get it looked at. How many miles do you have, what type of fluid did you use? Does it stay in first or just shift late?

[flag boy 23343]

Thanks for the info. It has 135,000 miles on it. It will shift from first to second fine, but thats about it no third or over drive. I'm using ATF 4 fluid and just changed the filter and after driving down the road the fluid smells burned.