I took my car to a shop and they told me it will be $550 to be fixed. I was looking at my engine and it had some small engraving on it that read " T/B and W/P, 7-08-02, 91,196". Im assuming whoever owned my car before me changed the timing belt and Water pump then. I now have 137,023 miles on my car. Has anyone seen engraving like this before on a used car? If this is the case then i'll probably wait about a month and a half before i change them now.