Russ
Found On Russ' Drive
Helping a Buddy out with his 97 F250 E4OD. When cold everything works fine. After about 40 miles, stays in 1 gear until throttle is lifted, or manually shifted into 2nd gear. Goes into 2nd, then when shifted into drive, goes into drive then right into OD. Shifter light is working and not blinking. New VSS installed in rearend. Goes back to normal shifting if left sit for a 1/2 hr or so. Then pattern repeats after about 30-40 miles. This is a new to him truck. Any thoughts? 
Thanks.
Thanks.