Subject: From where does the sound originate? The engine, the transmission, rear end? Author: davidc (moderator) : member since December, 2003 : 10311 posts Posted on: 2005-12-18 16:31:51

Does it sound metallic?

Sometimes water pumps and fan clutches can make grinding noises. Bad wheel bearings can do it, too, though I would expect them to get very hot to the touch.

David Cecil

'97 740iL, 131k miles
'92 750iL, 82k miles
'86 735i, 99k miles

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• Grinding Noise at Cold Start-Ups - halmkim 2005-12-18 00:22:14 (840 views)
  • This happened with the Ex's 323. I replaced the tensioners - bimmer5michael 2006-03-04 07:55:11 (470 views)
  • From where does the sound originate? The engine, the transmission, rear end? - davidc 2005-12-18 16:31:51 (598 views)
    • Re: From where does the sound originate? The engine, the transmission, rear end? - halmkim 2005-12-18 17:17:40 (612 views)
      • My first guess would be the water pump. Any signs of coolant loss? - davidc 2005-12-19 00:33:38 (654 views)
        • Re: My first guess would be the water pump. Any signs of coolant loss? - halmkim 2005-12-19 08:22:00 (603 views)
          • could be the belt tensioner or idler...also, it could - chip h 2005-12-21 10:44:49 (586 views)
            • Re: could be the belt tensioner or idler...also, it could - carrollf 2006-03-02 04:40:45 (542 views)
              • Re: could be the belt tensioner or idler...also, it could - pselva 2006-06-13 10:19:15 (300 views)