OK, so I recently got a 2002 LX470 and everything under the hood sounded fine. About a week later, I had the timing belt and water pump replaced. First drive, I notice an intermittent whine when accelerating from a stop. Now that the weather has warmed up, it's getting worse. Sort of a "waaaaaaAAAAAA..." then it stops at around 2300 RPM as though it "catches" and then runs as normal with nice cold air. In the last couple days, it has also started whining constantly at freeway speeds while the AC is engaged, but stops as soon as I turn the AC off. It's the compressor, no doubt. When the compressor is engaged at idle, it pumps quietly (no rumbling or squeaking), just the whine before it "catches". So, my question is could the timing belt change have goofed something up with the AC clutch? It seems to whine more when the weather is warm (more stress on the pulley/clutch?)
