I've noticed a problem with my is300 lately. Its an 03 5 speed with 11,000 miles. Here's the problem: When the clutch is engaged with the flywheel, I hear a chirping noise that almost sounds like the noise a belt would make. This sound can be heard in pretty much every gear while driving. Just a fast pace chirping noise. And when I put it in reverse, the normal "wir" sound gets messed up by bouncing alot. Any thoughts to what might be wrong before I take it into Lexus dealership?