OT mechanics: 93' F-150 dies when shifted into reverse, runs fine otherwise..

How does a 30 year old truck only have 90k miles?

Check the trans filter,fluid and pump. Reverse typically has higher line pressure than forward. Engine may be getting choked out due to torque converter not getting enough pressure and essentially killing the engine.

Don’t use reverse.

I don’t think a tranny issue would cause it to stall. Try replacing the Idle Air Control Valve and the TPS.

Carry a fuel pressure gauge to test fuel pressure… especially if it takes extra time to start. Fuel pumps are a common issue on these trucks.

Also check the shift range sensor. It’s on the shift linkage. Unplug it and see if it dies in reverse then.

Cluckster, we need an Automotive Board!

Welp, I went to the man's house and checked out the truck.
It needed a pint of transmission fluid, other than that, it ran, drove and operated perfectly.
I drove it about ten miles down a hilly curvy road transmission shifting just like it should and the truck ran like a top.
He took it to a local service center and one of the clowns in there told him that the transmission was going out. Told him he should sell it for scrap.
I think I'm going to buy this truck. The paint is Sun faded and it has a couple of medium size dents on the side of the bed, but the interior and seat are in great shape Engine bay and underneath look great, clean as a whistle.
It's got a brand new starter, battery, wiper motor and tires. He wants 3 thousand bucks for it. Wish it was a 5 speed though.
Even the A/C worked great. Thanx for yall's input.

I think I know what happened:
This guy was always a white collared type, so he didn't get it that the mechanic was just joking him and telling him that he has a good truck at the same time.

could it be backed up against a brick building??