As I have told you before..my car needed a water pump which was tied in to the timing belt..eventually when I was going over 70 MPH on the interstate - my water pump went out which snapped the timing belt. My car DID NOT overheat. It would simply click and not start when I tried to start out. Now I had the waterpump AND timing belt cahnged for 375 bucks. It should be around 400 dollars if it were your timing belt.
