Cleaning A/C Evaporator
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Joined: Dec 2024
Posts: 11
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Cleaning A/C Evaporator
Hi everyone,
I have a 2016 Porsche Cayenne GTS and I’m facing two issues with the A/C:
I believe the problem might be with a dirty A/C evaporator (cooling coil).
Can anyone please guide me on how to clean the evaporator using popular A/C cleaning sprays or foam products (like Würth, Liqui Moly, etc.)?
I have a 2016 Porsche Cayenne GTS and I’m facing two issues with the A/C:
- Sometimes I get bad smells from the A/C.
- During the daytime, the A/C takes a long time to cool the cabin properly.
I believe the problem might be with a dirty A/C evaporator (cooling coil).
Can anyone please guide me on how to clean the evaporator using popular A/C cleaning sprays or foam products (like Würth, Liqui Moly, etc.)?
- Where should I spray it?
- Do I need to remove anything?
- Is there an access point from the cabin or under the hood?
Pro
Joined: Nov 2007
Posts: 551
Likes: 124
From: Ponte Vedra FL
I would start by confirming the AC drain is clear. Its the little hose exiting above the passenger footwell that attaches to the base of the evaporator box, it can be pulled off and to reinstall spray with silicon or some lubricant as it's a tight fit. If it's clogged that could lead to the excess moisture and smell. if it's freezing up then you could have low refrigerant, this usually means cold AC when the car is started turn reduced output as you drive. I've never cleaned the evaporator on a car but if similar to a home you would spray the foaming cleaner through the air filter access. Even my 2009 doesn't smell and I'm in FL so confirm the drain is working.
Rennlist Member
Joined: Aug 2002
Posts: 3,790
Likes: 972
From: San Antonio, Texas
What you need to do is clean the condenser that's in the front of the radiator. If the fins are clogged then the cooling will diminish.
If that doesn't fix it take it to a reputable A/C shop and have them check the system. You might have a leak and are low on freon.
If that doesn't fix it take it to a reputable A/C shop and have them check the system. You might have a leak and are low on freon.
