4R100 popped out of 2nd gear
Good afternoon and hello, I'm new to the forum as I just purchased a 99 f250, my first personal diesel truck.
The issue I'm having is this. I was going down a steep windy road in second gear to not have to over heat the brakes and maintain a slow speed on the road and the transmission slipped or popped out of gear and started making a grinding noise until I put it into neutral. Once I put it back in drive it acts like nothing happened and shifts fine. Through all the gears. And the gear selector lever was in the correct spot not in between any gears and I didn't have any high high RPMs at the time just the weight of the truck and a 1000lbs of sand bags in bed, took foot of gas and it boom it happened . Any help or ideas on what it could be would be appreciated.