ctmangrum Posted November 13, 2017 Share Posted November 13, 2017 anyone ever replace any of the pulleys on the matrix? the water pump seems pretty obvious as well as the alternator. Have a rattling noise coming from one of them and have.nt isolated it yet but just getting prepared for whats to come. thanks. Quote Link to comment Share on other sites More sharing options...
Toyota Owners Club Posted November 23, 2017 Share Posted November 23, 2017 I would disconnect the auxiliary belt(s) and see if the noise disappears. Sometimes, rattling noises can be produced by the crankshaft pulley when it's breaking up and when no load is taken off it the noise then disappears. Also, Alternator pulleys (if the over-running type can also rattle but by taking the belt off then if the noise disappears then look there as well Quote Link to comment Share on other sites More sharing options...
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