I'm new to the Dakotas, have an 02, 3.9L,Auto. After engine and trans are warm, engine still goes to 2200rpm before it shifts out of 1st and 2nd. This is with a light foot. Engine roars and there is a hard shift. Also, driving interstate, cruise set to 75, any small incline, transmission down shifts and rpm's go from 2000 to 3200. Also loud roar. New dist. cap, rotor and new plugs. Milage at 70mph, air on, best has been 17mpg. Any ideas, or is this normal? Thanks in advance for any ideas.
Steve

 

did u buy this used?

 

Yup. Bought used, with 54000 miles. It's Ext. Cab and I paid $6500. Think I got a good deal because it's mint. Soooooo, what does buying used have to do with the engine roar and milage?

 

any cels???? mine did that but also threw a code i ended up replacing the transmission speed sensor and that fixed it

 

Check the throttle pressure cable at tb if its binding or out of adjustment it will cause this. there are others too but the cable is most common

 

my 02 w/3.9 and auto trans has similar symtoms also has a tight accelerator pedal, could it be throttle pressure cable?

 

Thanks Guys! I'll check both of those out in the next couple of days. Will let you know.

Steve

 

could have a shift kit..

 

Ya know, I have a 02 3.7 Ram and those things have that damned adaptive learning bs computer and everytime I reset it, I have this problem til it actually shifts. Then its fine.