The AC has been acting up where sometimes it cools and sometimes it doesn't. When it doesn't the AC light flashes. The system sometimes squeals when turning on or when accelerating from a stop.
I took it to the local mechanic yesterday and he said the belt needed tightening. They tested it by driving around for a while and said all is good. He told me Toyotas that old don't have a belt tensioner for the AC and are notorious for this problem. They have to be tightened occassionaly. I went back over my maintenance records and noticed the same fix was applied to the AC by a different shop last year.
This mechanic said the belts are affected by the local humidity, especially if it's dry one day and hot and humid the next like it usually is around here in SE VA.
Any thoughts on this?