Mt 2001 RX300 makes a squealing noise when starting. It sounds just like slipping belts. I replaced both drive belts last year, and the noise decreased, but with cold weather returning, the noise has returned with a vengeance. The squealing only lasts about 5 seconds after starting, then abruptly goes away. It occurs most every time I start the enigne. I tried re-tightening the belts today, and adding a bit of belt dressing. With the inner fender trim off, when the engine was started, it sounded like the A/C compressor bearing may have been the cause of the squealing. Has anyone heard of the A/C compressor being the cause of a noise like this. Once again, the noise only lasts about 5 seconds and does not return under any conditions - only initial startup.
Thanks,
