02 Tacoma

I have an 02 Tacoma. When the AC is on it will start to blow warm air. I turn the temp control to hot then back to cold and it will blow cool air. This happens several times.
Any suggestions

 

Do a search on here for "blend door actuator" or "blend door servo motor". Pretty common issue. Mine acts up occasionally, bought one of these off Rock Auto to replace mine whenever it finally gets too annoying:

https://www.rockauto.com/en/moreinfo.php?pk=8757192&cc=1429084&pt=10721&jsn=850

I seem to recall that the OE part is discontinued, so if you're wanting to replace the part I think the only options are aftermarket or go the junkyard/used route.