[W126 Coupe] Buzzing Fuel Pump

[richard jaffe]

Once the pump starts buzzing loudly, it is on its way out. The problem is you don't know when. It can fail in a week or a year. Several years ago the fuel pump on my 85 buzzed for a while and then failed.

Rich Jaffe
  ----- Original Message ----- 
  From: DCrawford at tompkinsinc.com<mailto:DCrawford at tompkinsinc.com> 
  To: mbcoupes at mbcoupes.com<mailto:mbcoupes at mbcoupes.com> 
  Sent: Friday, February 22, 2008 12:32 PM
  Subject: [W126 Coupe] Buzzing Fuel Pump


  Perhaps someone can give me advice regarding the fuel pump on my "84 500SEC.
  I recently had the fuel filter replaced as a part of a routine maintenance
  visit to my local MB shop.  When I got the car back I discovered the fuel
  pump was now continuously humming/buzzing.  The shop said it is not uncommon
  for buzzing to occur and that it was not an indicator that the pump was
  beginning to fail.  At roughly $250 for the pump plus labor, I'd put up with
  the noise if I were sure it was not getting ready to fail - I do not want to
  get stuck somewhere in the boonies in the middle of the night.

  Any opinions about what the best course would be or past experience with this
  type of problem?

  Thanks for all the help,
  Dave D


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