W203 climate fan air noise/noisy

[lynall]

Out in wifes car today and the fan was very noisy, not a mechanical noise but just the amount of air it was pushing out.

Than later on went out in my car completely different much quieter even though the fan was shifting a lot of air as well.

Any ideas, or all w203 models as noisy as this?

Was thinking a/c may be low on gas but when temp turned down to 16 the air is freezing so pretty certain its doing the business.

Just checking russian site and here http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=203764&M=112%2E946&GA=722%2E618&GM=716%2E660716%2E667&CT=F&cat=66U&SID=83&SGR=045&SGN=01 item 70 shows as 2 seperate filters inside the car similiar set up as my w210 maybe they are blocked if its got them that is?


Lynall

 

[whitenemesis]

Pollen filter could be blocked, usually shows as poor airflow rather than noisy air flow.

Mine makes a fair bit of noise until the temp has stabilised. You could try taking it out of Auto mode by adjusting the fan speed manually?

 

[Rory]

There's a few things that could be wrong, but if the air is blasting through OK, then that's probably just how it is.

I notice it more on mine in cold weather when it's on demist - as the engine warms up the fan speed increases until it's almost deafening.

 

[Adam230K]

Could be excess dust on the actual A/C fan, u could take it out and give it a clean.

 

[lynall]

Filter under the bonnet is recent 3 months ago ish, wife seems to think its always been like this, so i will probably ignore it, apart from having a look to see if its got the 2 filters in the cabin.

Anyway thanks for the replies i will post up pics again if i find extra filters.



Lynall

 

[lynall]

Stripped it today, no extra filters, removed fan assy was spotless



Lynall

 

[Stratman]

The handbook for my W203 says that if all the vents are left in the halfway open position then good ventilation with minimum noise will be achieved.

 

[lynall]

Trust me they are lying.

One thought had occured to me as her car is black i wonder if it gets considerably hotter inside than my silver car, ie heat absorption?



Lynall

 

[Rory]

Trust me they are lying.

One thought had occured to me as her car is black i wonder if it gets considerably hotter inside than my silver car, ie heat absorption?

I think the climate control really doesn't work very well in C Class. Although it can blow cold air, it still seems to struggle to keep the car cool.
Maybe the digital version is better, but I came from having a company Peugeot 406 Executive and the climate control in that was much better.