bottomwatcher Posted February 8, 2020 Report Share Posted February 8, 2020 Looks like I am the only one on the internet with this issue so I am asking ratsun after no response on the toyota forums. The facts! Put new waterpump on 2003 by toyota highlander Aisin waterpump timing belt kit. New Aisin waterpump, idler pulley and tensioner pulley. Mitsubishi belt. All quality. Reused original tensioner. Bitch to compress and gets belt bar tight so I assume good. Problem 90k mile belt lasted 90 seconds after start up. Lots of smoke and belt was destroyed. Replaced with old belt sans belt cover to figure out wtf happened. New waterpump wants to walk belt off pulley into waterpump body. A friend suggested notching a rib in the waterpump webbing thinking the belt wouldn't go further. Did that and I think if the waterpump body wouldn't stop it this belt would want to walk right off the pulley. Watched plenty of videos and went step by step but no one else seems to have this issue. I am stumped! Quote Link to comment
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