Buzzing Hymer

Discussion in 'Tech/Mech General' started by Redjumpa, Aug 23, 2013.

  1. Redjumpa

    Redjumpa Funster

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    My 91 Hymer B544 has just developed a strange noise and associated concerns through the amp meter. The old Hymer has the habitation fuse box sited down at the side of the driver, When I started the van today there was a faint buzzing sound from somewhere around the fuse box. This was linked to the engine speed as the more revs the higher pitched buzzing. At the same time the amp meter was dancing between + and - in time to the buzzing.
    Not a great explanation I know, but any thoughts?
     
  2. TheBig1

    TheBig1 Funster Life Member

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    knackered relay by the fuse box:thumb:
     
  3. Redjumpa

    Redjumpa Funster

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    Thanks for the quick response. But I can't see any way of getting behind the fuse box and certainly can't reach from under the bonnet. The fuse box looks like it should slide out but can only move it about an inch!
     
  4. bigfoot

    bigfoot Funster

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    I had a '92 B544,on a 2.5 TD Fiat. The fuse box is in the glove box,unhook the stay wire and that gives you space to access the box. There are 2 relays in there,both the same they are black cubes about 1" in size. One is for the fridge the other,I believe to be for 12v charging, If you have the charger under the seat,that could buzz due to the laminated sections on the transformer working loose.
     
  5. Redjumpa

    Redjumpa Funster

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    I have two fuse boxes. The one you mention in the glove box with the relays behind it. This is the chassis one ie wipers, heater, fan etc and yes there are relays in there. The fuse box I'm talking about is the brown habitation one down by the drivers legs near the door. The noise is coming from around there. I'll post some photos in a while.
     
  6. bigfoot

    bigfoot Funster

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    I know that onw it is usually attached to the body by a couple of PK/self tapping screws through the carpet,but be careful the wiring is a bit 'mean' with little slack.
     
  7. Redjumpa

    Redjumpa Funster

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    That's the one. So does the fuse box come all the way out. I can only move it a little and then it's solid. Been reluctant to pull too hard if it's not meant to come all the way out.

    Tried loading up a photo and failed miserably!!
     
  8. JockandRita

    JockandRita Funster Life Member

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    It might need resizing, ie, too big.
    Send it to me via email Graham, and I'll upload it for you if your still having problems. :Smile:

    Cheers for now,

    Jock.
     
  9. bigfoot

    bigfoot Funster

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    It will come out a bit,pry it out gently with a wide bladed screwdriver, but the short cables will only allow it to 'hinge' forward just enough to work on. Another cause could be sparking on a contact,try a squirt of WD40.
     
  10. JockandRita

    JockandRita Funster Life Member

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    On behalf of Redjumpa (Graham), here are a couple of images he wanted to upload.

    Cheers for now,

    Jock.
     

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