Noisy Heater Fan in Passenger Footwell - Mk 3.5 (2009)

Technical Area Routine Servicing
2

The interior heater/fan in my Mk3.5 is starting to become a little noisy. It’s not really a rattle, but I can certainly hear when it’s running.

So are there any user serviceable parts that I can clean or replace?

Thanks

 

 

3

It could be a twig or leaf caught in the blower motor housing, the motor drops out from underneath it allow access.

4

Not had this issue with my NC, but had similar on my old (now long defunct) NA.
Rather than trying to take it all apart, I just put a powerful vacuum cleaner hose on the input trunking, and it sucked out a couple of leaves which were scraping the fan blades, with perfect results…
Worth a try?
Simples!
Just my free advice - money back if not happy!

Aldi

5

Thanks - I’ll take a look this weekend.

6

I’ve removed the fan, and there is no leaves etc, but inside the pipes its a little wet - is this normal?

 

 

7

Don’t know, never looked. Condensation on the evaporator is normal.

8

I don’t know if they have a pollen filter but if there is it might blocked. I had this with a Volvo which was full of small leaves, seeds and general muck. A new one made a big difference to the output and noise.   

9

Hi Smiffy.

I experienced something like this with my last MX 5.It was more like a rolling sound.  I had an auto electrician out the day after to check it, but the noise did not return. He assumed it may be the fan motor bearing on its way out.

I hope this is of use.