what is the noise that will signify the timing chain on the 4 cyl 2004 camry engine needs replacing. in other words, how can i tell the difference between that special noise and for example a loose fan belt that squeaks at first then disappears?
Recommendion is about 75,000 but 100,000 is probably pretty safe to risk. Mine went to 225,000 before it snapped at a very low speed. If you travel mostly in-city, you can risk it more than long distance driving. If you have insurance tow services that may be limited to 15 miles or so without extra charge, it depends on your situation, and if you want to economize or pay for added security with extra preventative care.