Arizona without AC is, IMO, a lot worse than hell. I've been having trouble with my AC since summer started, of course right.
Anyways, at highway speeds, it would blow humid but still cold. I looked at my cold side psi, and it was low so I charged it and voila I found a small leak in the high side. I still need to get that repaired.
Yesterday while driving home, I was going over 70 mph and the blower motor completely stopped but I still felt a cold draft coming from the vents. The motor comes back on and starts blowing hot air like the compressor turned off. I pulled over to check and nothing was wrong. Same thing happened today.
My question is, should I just redo the entire system, or replace certain parts?

 

Woops, I drive a 97 4.0 xlt rwd.

 

If the pressure in the system is too low, it will disengage the compressor clutch, fix the leak before you do anything else.

 

So while I was replacing my brake pads I was checking my AC vacuum lines and one line disintegrated in my hand. I fixed it and my AC started working as well as it used to.
I just have to wait for a cool day and a free day so that I could fix that leak.