I have a 2008 Mitsubishi Endeavor SE AWD and I've
noticed this rattling noise under the vehicle. I can't
quite pinpoint where it's at, sounds like it's under
the center console sometimes but under the rear
seats at others. It's sounds like someone rattling
rocks in a tin can and it's really bad when I'm
starting uphill or hitting low revs (1,500-1,800).
Anyone have any idea what it could be?
Yes, possible catalytic convertor heat shield has come loose. They tend to rust and the spot welds break loose making a ratting noise. You'd have to crawl under the car when it is cold to inspect.
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