I have a 93 ST170. The air con went warm so I got it filled. As I left garage (owned by mate) it wasn't working. They assumed leaking and checked, no leaks. They tried the next day, working.
Turns out the clutch on air con compressor engages, but disengages sometimes for no obvious reason. When I was talking to mechanic it 'clicked' off, air con stopped, then it 'clicked on', by itself. I could hear it.
My car isn't climate controlled
They say best to source reconditioned compressor as prob not serviceable, but to ask online
1. Any ideas of why it would do it, and is it fixable?
2. If I need to buy one, where from & how much?