Probably bad resistor pack on blower motor
setting timing on a f150 4.9 6cyl
hit it with a hammer....
.054 inch
You can add air conditioning refrigerant to your 2000 F1 50 pickup truck air conditioning system through the low pressure port. The low pressure port will be on the top of the air conditioning compressor.
My guess would be the blower motor speed resistor is burned out.
Sounds like a broken switch.
The low side is on the accumulator and the high side is on the discharge line......
The air conditioning in a 1996 F150 is made up of several components. The compressor, drier, and coils all need to work properly to ensure comfortable driving in hot weather.
Don't mess with that adjustment. The idle speed is electronically controlled.
www . motorcraft . com ( no spaces ) lists 2 remanufactured alternators 95 amp - without air conditioning 110 amp
A complete system with labor and parts could easily be 1000.00 or thereabouts, You are better off to get aftermarket and avoid the dealer's extreme mark up on parts.
10 degrees BTDC - check engine compartment sticker