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Old 09-20-2007, 04:52 PM
JFawcett JFawcett is offline
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Join Date: Mar 2007
Location: Houston, Texas
Posts: 211
OEM pumps are pretty quiet....usually they get noisy as they begin to fail.
Sounds like yours was replaced with a non-Mercedes part....not that that is bad....but could explain the noise.
The enclosure is open in the back (you can look under the back of the car and see the pump and filter).
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