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Buzzing noise from large heat sync under passenger side dash

Posted: Thu Sep 08, 2016 7:43 pm
by SlimGrim
Under the dash above the passenger side footwell is a large round aluminium heat sync, which has recently taken to clicking really fast when the engine is running until I turn the lights on at wich point it stops, the noise returns when I turn them off again, any ideas on what this is and why it could be doing this?

Re: Buzzing noise from large heat sync under passenger side

Posted: Thu Sep 08, 2016 7:45 pm
by SlimGrim
This

Re: Buzzing noise from large heat sync under passenger side

Posted: Thu Sep 08, 2016 8:14 pm
by twiss
Think its the dim dip relay. Should be OK to just unplug it

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 9:02 am
by zook123
It's your AirBag ECU, or Flux Capacitor :)

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 10:44 am
by SlimGrim
I have an airbag!?

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 10:50 am
by zook123
haha, nope! I do. If it works or not is another question!

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 9:24 pm
by donkeychomp
I have the same issue with my LJ and the noise stops when I brake. Why it does this is a complete mystery.

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 10:20 pm
by dan_2k_uk
Dim dip unit. Unplug and chuck it.

Re: Buzzing noise from large heat sync under passenger side

Posted: Fri Sep 09, 2016 10:25 pm
by SlimGrim
is it useless or should i replace?

Re: Buzzing noise from large heat sync under passenger side

Posted: Sat Sep 10, 2016 2:56 am
by ROBBIE
No need to replace