BMW 2003 330 Xi Popping/thumping

2003 BMW 330
50,000 MILES • 6 CYL • AWD • MANUAL
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DRJON1
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BMW 330Xi 2003. LOUD thumping/popping intermittently from back deck beyond rear seats near speakers even when sound system is OFF. Nothing visible from trunk
Jan 28, 2011 at 4:27 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
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  • ASE Certified Mechanic
Noise from the area you refer to could be 1) The center support bearing rubber isolation has degraded and the driveshaft should be inspected for same and repaired/replaced straightaway. 2) A subframe/differential rubber isolation mount failure. 3) Bad rear shock mounts. I strongly recommend you seek out someone to put the car up in the air on a lift and inspect it for the unsafe issues that I have just presented, you might want to tow it to your BMW service provider to accomplish the inspection, be safe, do not take chances.
Jan 28, 2011 at 5:34 PM
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DRJON1
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Thank you for the info. I think it sounds more like a sharp electrical popping than frame /differential/shocks. But I will see my repair guy ASAP.
Again thank you.
Jan 28, 2011 at 5:38 PM
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DOCHAGERTY
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My response may be a little over the top, but you can agree I'm sure, that noise can be different things to different people. Cyberspace has it's limitations.....
Jan 28, 2011 at 5:43 PM
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DRJON1
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Dr Hagerty,
Thank you again
Jan 28, 2011 at 5:44 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
You are very welcome.
Jan 28, 2011 at 6:09 PM
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