1997 F350 power stroke
Need some help. My 97 7.3 has a brand new E40D transmission and is shifting weird. From 2-3 if I’m going up a slight incline sometimes it will shift super hard and does the same at higher RPMs going up a hill then releasing the throttle a bit then BOOM it shifts hard and learaches forward. Other times it seems to work just fine. Any suggestions would be appreciated.