986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - sewage like smell in car when driving any idea?

blue2000s · 07-26-2008, 07:55 PM

Try driving the car around without the ac on. See if you have the smell. If not, then turn the ac on and then check for the smell. If it only smells when you first turn on the ac, you have mold build up in the condenser or ducting. If this is the case, it's most likely not a drainage problem, moisture in the condenser can't be avoided. There are some products you can buy to spray into the vents, these might work, otherwise, you're looking at a disassembly and cleaning of the condenser and maybe some of teh ducting..

You can avoid this in the future by turning off the ac but leaving the fan on a couple of minutes before you turn off the car. This dries out the condenser to keep mold from growing.

07-26-2008, 07:55 PM	#5
blue2000s Porscheectomy Join Date: Mar 2006 Location: Seattle Area Posts: 3,011	Try driving the car around without the ac on. See if you have the smell. If not, then turn the ac on and then check for the smell. If it only smells when you first turn on the ac, you have mold build up in the condenser or ducting. If this is the case, it's most likely not a drainage problem, moisture in the condenser can't be avoided. There are some products you can buy to spray into the vents, these might work, otherwise, you're looking at a disassembly and cleaning of the condenser and maybe some of teh ducting.. You can avoid this in the future by turning off the ac but leaving the fan on a couple of minutes before you turn off the car. This dries out the condenser to keep mold from growing.