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Blower fan drone on Merc ML270 (W163)

  • 11-11-2016 03:58PM
    #1
    Gumbo
    Moderators, Society & Culture Moderators Posts: 41,706 Mod ✭✭✭✭


    Guys,

    There's a massive drone noise coming from the cabin when the blower is on in the jeep. If I turn the fan speed down, the drone remains.

    If I turn AC on, the drone goes away.

    Really annoying.

    Anybody any experience with this?


Comments

  • #2
    Harcrid
    Registered Users, Registered Users 2 Posts: 1,312 ✭✭✭Harcrid


    Is the drone definitely from the cabin? All I can think is that the clutch on the AC pulley isn't disengaged fully when not being used causing a noise? Then when you turn AC on the clutch engages fully which may be why it's gone then. Pure guess is all though.


  • #3
    Gumbo
    Moderators, Society & Culture Moderators Posts: 41,706 Mod ✭✭✭✭Gumbo


    Harcrid wrote: »
    Is the drone definitely from the cabin? All I can think is that the clutch on the AC pulley isn't disengaged fully when not being used causing a noise? Then when you turn AC on the clutch engages fully which may be why it's gone then. Pure guess is all though.

    Deffo coming from the cabin yeah. Outside engine sounds fine but my mate did. Emotion the AC pully clutch thing.

    I only replaced the air con compressor in sep 2015 with a second hand unit.


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