AC is not working properly

2004 toyota tacoma prerunner

So this has been happening for awhile now. When i turn the AC on it blows out hot air. then if i turn the temp dial to HOT then to COLD, it starts to blow cold ac air. it stays on until i hit a big bump or sometimes it just goes back to HOT. i hear small clicking sounds like the compressor starts up or something like that but it just stays hot sometimes. on a good day i get the ac working sometimes. but once i do get the ac on, it stays on for awhile.

what could i be that needs fixing?

 

When the temperature control dial is moved to AC, the AC control module sends a signal to the air mix control server motor. The servo motor is then driven to reach the desired temperature and moves the film damper. So, my guess is that the problem is either in the control assembly, the servo motor or the corresponding wiring. Here is a link to an article you might find helpful: https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-ac-control-switch