Strange Smell???????

Hi all, i seem to have a very strange problem........... my 2007 2.4D seems to be emanating a strange smell from the vents. not the usual musty smell that can sometimes come from air conditioning systems but a smell that i can only compare with DOG S**T! i have tried the system with the heat on/off & air con on/off etc etc but i can only smell it when the heat is on another strange thing is that it seems to go off after a while??? any advice would be great thanks

Any Ideas people?.....thanks 

its not unknown for cats to waz on cars, also i remember hearing somewhere about a rotting fish smell and a company who sanitises airconditioning systems in cars

If it goes off after a while it most probably is the AC system. The musty odor drom the AC system varies in the strength of the smell. This depends on how much mold is in the system. It could also be that the cabin filter need changing as it too could be contaminated by the smelly air from the AC system. I have read that Volvo has a new drain valve design that might stop or reduce this AC odor.

This is most likely to be a bacterial infestation in your air con. I would adise getting it sorted ASAP!

bad smell 

I worked for a garage once. The customer was quite rude at the service counter. The guys who worked on his car got an old sponge, soaked it in oil and dog ****, and placed it in his scuttle. He was constantly coming back complaining of the smell. Sweet memories of the guys I once worked with!

as i said earlier it's not the usual musty smell i am getting, rather more like vinegar now the weeks have passed

I used to run a valeting company and one of the unsavoury problems we had from time to time was foul air from customer's air con systems, usually because owners switch off the a/c over the winter which allows bacteria to grow in the moisture present in the system during wet months. If a proprietary a/c anti-bacterial spray clears up the problem then just never, ever, turn off the a/c again :lightbulb:

Have taken my car back to volvo dealer, they "Cleansed the system" but unfortunatley it only masked the smell for a day or so.