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Click/Clunk behind heater control unit

Mark Elder

Mark Elder

PCGB Member
Member
Hi,
I have a new noise I've not noticed before coming from somewhere behind the heater control unit (possibly to the left of it or inside).

Happens when (or a few seconds after) I change the controls (eg fan to zero) and sometimes when I've not touched anything.

It's not loud - would not notice if I was getting on and driving the car hard! A light click/clunk perhaps as if something is closing and the thing is lose and about to fall apart.

Any ideas?
 
Hallo Mark, could it be one the three ventilation servo's found under the bonnet at the bottom of the windscreen. The same servo can be heard when you turn off the ignition and one of the servos moves to close off the ventilaion systems.

regards
David
 
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