I recently bought a 95 ranger and took it out for a drive. Acceleration seems fine at lower speeds but when I got on the highway I had to floor the pedal for a mile or two just to get to 70. With the pedal floored I can only get to about 72, 80 if I'm going downhill, also slows down when going uphill. It never seems to get very high RPMs when accelerating either.

 

is the trans downshifting when you try to accelerate?

 

I don't think so.

 

i would start there...it should kick down a gear or even two when you floor it on the highway

 

What could cause that problem?