BMW 2003 330 Xi Popping/thumping

2003 BMW 330
50,000 MILES • 6 CYL • AWD • MANUAL
Avatar
DRJON1
  • MEMBER
  • 3 POSTS
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 8:27 AM
Advertisement
Avatar
DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
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 9:34 AM
Avatar
DRJON1
  • MEMBER
  • 3 POSTS
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 9:38 AM
Avatar
DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
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 9:43 AM
Avatar
DRJON1
  • MEMBER
  • 3 POSTS
Dr Hagerty,
Thank you again
Jan 28, 2011 at 9:44 AM
Avatar
DOCHAGERTY
  • ✓Experienced Mechanic
  • 9,606 POSTS
You are very welcome.
Jan 28, 2011 at 10:09 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.