Just spent another $550 on my a/c recently. Replaced the speed sensor on the compressor. New ETR switch, (missing due to original mechanic not replacing it) Evac system and recharge. The system was overcharged as well by previous mechanic. The a/c will still stop working unexpectedly and seemingly for no reason. If I quickly turn off the engine and then back on (while driving) it will kick the compressor on but then will stop working again. 2 (two) mechanics seem to be baffled but this a/c behavior. Just replaced the climate relay today but the problem persists.

Any thoughts? Geeeeeze! Waaaaay too much money to spend on A/C!!