My guess also, BTDT w123 300D NA. Disconnected speedo, sound went away. Reconnected it came back.
Took apart speedo, greased, put back, no sound. For me, it started at lower speeds when it was colder. I would have described it as a big blower motor behind the cluster, though I also thought it might be in the engine compartment. Easy fix, hope it is for you too! -Tim Rich Thomas <richthomas79td...@constructivity.net> wrote: >Speedo cable/head? > >--R > >On 6/1/2010 5:06 PM, andrew strasfogel wrote: >> I get a hoarse "wha, wha, wha" noise when my 1983 300TD turbodiesel wagon >> reaches 65 mph and above. The noise dissipates (goes away) when I drop >> below 60. The noise appears to emanate from under the hood just in front of >> the windshield, roughly in the center. I can't rule out something in the >> instrument cluster, although the tach, temperature gauge, and other >> indicators are unaffected during these episodes. It has nothing to do with >> the cruise control or radio or ACC operation either - I've checked. Vehicle >> handling is OK during these noisy episodes, although it is unsettling to say >> the least. >> >> So what could be the source of this noise ONLY at high speeds? Could it be >> a problem in the turbo? The noise invariably manifests itself in >> relation to road speed, not engine revs. I am truly perplexed, as this has >> never happened to me in 21 years of driving these cars. >> >> TIA, >> >> Andrew >> 1983 and 1985 300TDs >> _______________________________________ >> 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
