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Date registered: May 2006
Vehicle: 2001 E320 - Brilliant Silver/Ash: 107,000+
Location: West Virginia, USA
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Quoted: 6 Post(s)
The fuel filter was a logical first step. Are you sure it's the fuel pump making the noise? If you are that could well be going out. If not get a mechanic's stethoscope and isolate the buzzing noise. You could also check the fuel pressure as it enters the engine because there might be some sort of restiction somewhere within the fuel delivery system.
Mercedes Benz - Das beste oder nichts!
Last edited by Musikmann; 11-01-2009 at 01:38 PM.