My 2004 Mazda 3 has developed a rattle that can be heard when the rear left tire passes through a road imperfection. It sounds like there's something in the trunk that's bouncing around.

Of course, first thing I did was empty my trunk - rattle was still there. Then, I removed the jack, spare tire, and all tools, rattle was still there. I checked all clips, rattle was still there.

Next step was to have the suspension checked. I changed my shocks, but the rattle was still there. I even changed my stab links, but rattle remained (waste of money oh well). I also tried a new shock mount, new shock boot, and new lateral links, but the problem still persisted.

I already had 2 shops look at the suspension and both said that it was fine. So now, I'm quite stuck as I dunno what to check next.

One shop suggested that there might be some screws stuck in between the metal panels of the car that shakes around when passing through road ruts. Oddly enough, we can't reproduce the problem by bouncing the rear when it's stopped. You only hear it when the car is moving and the left rear tire passes encounters potholes.

If anyone has any idea on what the problem could be, or could suggest a shop that specializes on issues like this, I'd gladly appreciate the help. [emoji4]


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