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Old 06-12-2016, 07:18 AM   #5
Timco
I am my own mechanic....
 
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Join Date: Feb 2013
Location: Salt Lake City, UT
Posts: 3,432
Use your fist to pound around in the trunk with car off. If heat shield you'll hear it.

Mine made an awful rattle. It was the water pump scraping the engine block.

Chain tensioners have been said to cause start up rattle too.
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