Quote:
Originally Posted by yaris2010RS
i dont know what the maintenance milage is for tranny fluid but 53,000 i think is early. u could get it done and it will probably make the sound less or gone for a while but that is probably not the issue.
check ur engine mounts and see how much the engine moves at idle and when shifting from drive to reverse. also check the air box (mine came loose and was making a scary sound) and check hoses for contact points (probably against the firewall) and check exhaust bushings
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If tranny fluid needs changing the first thing you'll notice is clunky shifting, not phantom clatters. Engine mounts will affect driving a lot.
Air box - maybe. Mine actually broke and was vibrating into itself. A new SRI fixed that. But I could hear that noise constantly pretty much, and didn't have to sound proof my garage and then hold my breath to hear it...
Seriously though if its something that quiet its probably a zip tie vibrating with the engine and hitting a coolant line or something even less dangerous...