Smelly A/C when starting car ... what can i do?

rabe187

Active Member
Mar 19, 2009
109
0
Saudi Arabia
www.cardomain.com
I've had this problem for some time, i live in hot Saudi Arabia so i badly need the A/C i've asked the dealer and they didn't have a solution as they said MK1 Leons suffer from that ... when i change the A/C filter it goes away for about 2 weeks and then comes back...Help.
 

Muttley

Catch that diesel!
Mar 17, 2006
4,987
31
North Kent
Check that the drain from the cooling matrix isn't blocked, causing condensation to build up in the airways.

The cooling matrix collects condensation as it cools the air (unless you are in a very dry climate) and this has to be let out. A tube leads from the bottom of the cooling chamber down to the bottom of the car, where the condensation is allowed to drip out onto the ground.

If you aren't getting drips of water under the car after a journey using the air cooling, then the drain tube could well be blocked
 

james walker

cooling is the key people
May 24, 2007
5,121
2
retford notts
change the pollen filter mate, id do that first as they are a cheap and easy fix... the comma cleaner works okay.

if all else fails, go for a regas.. fairly expensive option aswell.
 

Andrewcupra TDI

Resident Desk Jockey
Apr 30, 2008
3,282
2
in the mountains ( Wales )
mine whiffs a bit too , mite change the pollen filter again (is this different to the one above the airbox )

might also try the comma stuff too , i dont recall seing water from beneath the car after a drive , not that i really look tbh
 

adam cupra 20vt

Built Not Bought.
Mar 31, 2005
6,162
2
Mud Hut
mine whiffs a bit too , mite change the pollen filter again (is this different to the one above the airbox )

might also try the comma stuff too , i dont recall seing water from beneath the car after a drive , not that i really look tbh

It is the one above air box in the scuttle panel :)
 

33754k

Active Member
Dec 4, 2006
159
0
Manchester
Good practise to run hot air through the system after using air con- stops the system festering over night.... and stops smell.... atleast that is my experience
 

rabe187

Active Member
Mar 19, 2009
109
0
Saudi Arabia
www.cardomain.com
great stuff guys ... i'll try them out and hopefully it works, weather is starting to get cooler so i won't be needing the A/C as much but still annoying to have to up with.... Cheers!
 

Gordz

Caught The Mod Bug Again!
May 31, 2007
1,325
1
North East
I tried Car Plan air con cleaner (I got it for £4 from ebay, Halfords sell it for £12 and Aldi sell it for £1.99! lol), worked a treat, 2months since using it and smell hasn't returned once yet. Highly recommended!
 

leeapole

Active Member
Sep 27, 2008
103
0
Godalming
common problem in all air-conditioning not just cars, its fluff and particles that stick to the inside air-conditioning coil (behind the glove box in most VAG cars) bit like tumble dryer fluff, it gets wet with condensation when the ac is running and moulds, the smell goes away when the coil drys and comes back again when it gets wet.

In normal AC you would use a coil cleaning solution, a small high pressure spray and a paint brush to remove it, problem solved.

In cars its a little bit more difficult because getting to the coil to clean it is hard, comma works by killing the bacteria living in the fluff but doesn’t remove the fluff so it comes back sooner or later.

I’ve used comma on my cupra last summer, worked fine but the smell came back a few months later, now I carry an aerosol of detol anti bacterial surface spray (kills 99.9% of all bacteria don’t you know) and i periodically put the AC on recirculation and spray upwards from the passenger foot well (air onto the coil when in recirculation) for 10-15 secs.

Works for me, and working within air-conditioning sector for 10 years i know its what lazy engineers do to clean ( without getting their hands dirty) whole offices of indoor units!!

hope this is helpful
 

Gordz

Caught The Mod Bug Again!
May 31, 2007
1,325
1
North East
They are usually like smoke grenades that you set off in the car with all the windows and doors shut and the air-con on full recirc mode!

Yup, that's exactly how I did it. Leaves a lovely citrus smell too whenever I switch the aircon on :)
 

scott99

Guest
The best products to clean your evaporator coil is either easyclean which kills the bacteria n leaves a nice scent or condenside which is a bit more heavy duty which kills all but doesnt really leave a scent. Airco breeze is good to spray down the vents as that neutralises smells.

As for running the heating quickly before you turn your car off to dry the coil aint really the best idea as it can lead to smells being formed.
 
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