Ah thrumming not thumping. Sorry I misread the word. Sent from my iPhone
On Jul 15, 2009, at 8:33 PM, Dimitri Seretakis <dsereta...@yahoo.com> wrote: Check both driveshaft flex disks and also make sure that the axle shaft boots are not torn as a worn hemi-axle shaft can make a loud thumping noise that starts after about 20 min of driving. Sent from my iPhone On Jul 15, 2009, at 8:23 PM, OK Don <okd...@gmail.com> wrote: Perhaps the drive shaft center bearing? On Wed, Jul 15, 2009 at 3:55 PM, Fmiser <fmi...@gmail.com> wrote: Troubleshooting challenge! The car: 1985 W123 300TD (wagon) The problem: A noise that sounds a lot like a noisy, big-lugged tire. It is faster than a tire-speed noise, so it's not a stone in the tire, etc. Details: The noise showed up a 1500 miles ago - very faint. I didn't worry about it. About 200 miles ago it started getting louder. Neither my passengers nor I could hear the sound outside the car. (running next to the car or hanging out the window). The sound quits when the brakes are moderately applied. (moderate meaning. "a bit brisker than I usually use to approach a known stop sign, not not so agressive it startles any of my passengers") The sound quits when making a moderate right turn. Seems to be g-load rather than steering angle related, but I'm not sure. I put the car on blocks so the back wheels where off the ground. I did not hear the sound. I looked at the front right (starboard) outer wheel bearing. It look okay, but I was in a hotel parking lot so I didn't look super closely. Any clever ideas where to dig next? Because it didn't show up when the back wheel where off the ground _and_ it is influenced by braking and turning, I'm thinking it has to be at the wheels.... Maybe? -- Philip -- OK Don Pair of W124 300D 2.5 Turbos -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://okiebenz.com/pipermail/mercedes_okiebenz.com/attachments/20090715/611bac91/attachment.html> _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com