Ok just finished with a transmission fluid change/filter, and oil change and a set of new plugs, cables, ect.
My question is about the transmission. When I shift in reverse i get a very hard shift. when i shift into drive it shifts hard. When I drive it it will shift all the way thru but seems to stay at the last shift. Also my overdrive does not seem to kick in. Any help?
Thanks in advance.
Russell

 

65 mph should be around 1800-2000rpm depending on your rears.

 

I have a 88 3.9 4x4 no Tachometer.

 

For the hard shifting, check for play in your u-joints and rear axle gears. My guess is worn out u-joints or too much ring gear backlash.