1995 Ford F-150

I have purchased a 1995 F150 4WD--5.0 liter standard cab with long bed truck. The truck has a 3 inch body lift with a 4 inch suspension lift and 35 x 12.50 x 17 inch tires. The automatic transmission (4R70W) would not shift into second unless I let off the gas and it would shift properly.
Now the truck will not shift into second unless I do it manually. It will not shift into third gear or drive now.

The engine will idle at 2000 rpm when you start the truck and stay this way for 3 minutes. It will do this each time you start the truck.

Now that the cold weather has arrived the truck will turn over but not start. It has dual gas tanks.