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I think something died inside my ac vent. Honestly it smells like funky feet. Its only when u turn the ac on. How can I check this? I recently had the ac/heater box replaced under warranty. I don't know if that caused anything.
 

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I've experienced it several times. Seems more like ass to me.
Initially I hoped it was from outside the car. But about the fourth time I accepted it as originating in my sweet ride.
 

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rico I am going through this myself after having had the AC box replaced about 800 miles ago. craig/derek didn't know what it was, maybe the glues. Some on here have had issues with the pollen filters mildewing. I pulled mine, and albeit filthy, not really a mildew smell...so the only thing I can think is the glues/plastics of the new box. It goes away for me after awhile.


On a side note...I couldn't find the pollen filter listed on the service intervals...some on here have said it hardly needs changing, and I would dispute that. My old rav4 needed it every oil change/10k miles...I will probably do every 10k myself. I am at 20k and this is what mine looked like (at least its an easy change)



Unfortunately this does not appear to be available elsewhere, other than deroure. It turns out it is also a cabin filter for some JCB Farm Tractors, and they're available online for $20 each, but that is about what you pay for the OEM ones. I looked for alternatives, but couldn't find a suitable match for size and the foam gasket.
 

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I've had a similar issue and have not had any service performed on the HVAC unit. I think it is the check valve on the drain line from the account condenser box. If you have access to the bottom of the car, pull the front under tray and look for the hose and remove or clean the valve.
 

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Discussion Starter #5
Ill see if it goes away soon. Of not ill try to get on a lift to pull the valve.
 

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The malodor is from mold growing in the warm dark moist environment, a little bleach will kill the mold; but it will come back since the mold spores are airborne.
 

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It's Mold. There's a spray you can get ( Probably alcohol based ) to kill it.....it only works sometimes.
 

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Where would you spray it? I'm pretty annoyed as it only started after having my ac box replaced
 

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I wonder if the evap unit drain hose got kinked during the replacement. If that happens the condensation will not fully drain and the residual water will create mold.

I've seen products for this problem but do not know if they work.

Robert
 

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Of all the A/C units I've worked on never saw a valve. They were always just 'straight through' drain tubes. Why would they put a valve in there and what purpose would it serve? I'll check out the link, thanks.

It was bad enough before they started using cabin filters. Used to change evap units on Volvo 850's because the leaves and debri would go into the evaporator and rot out the condensor. Then they came up with a design to install a cabin filter and keep the crap out.

I'm not familiar with the Evora, my advice is 'generally based' upon other manufacture designs I have worked on.

Robert
 

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Dumb question but is there a DIY pollen filter replacement thread anywhere? I couldn't fine one but definitely have a similar issue.
 

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its easy. open the front access panel. At the bottom youll see a black plastic cover held down by two screws. Undo the screws, remove panel. If you are facing the windshield from the front of the car, it will be up towards the back of the housing where it tapers inwards. Just grab and pull it out it is held in by friction/plastic frame around it but it'll flex enough to come out.


To replace, follow the arrows for airflow and make sure the foam seats evenly all the way across. Reapply panel and you are done.

FWIW didn't help my smell.
 

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We have a machine that produces a mold killing vapor that is pulled through the evaporator and HVAC ducts. Takes a half hour and generally does the trick. Come over to the shop, or look for a shop (a/c specialist) with a UView MIST machine. Link is for UView site specific to this product.
UView: Product Detail
 

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I very much doubt the smell I have experienced was biological in origin. Too "pungent". My impression is that it's chemical.
 
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