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I just returned from a 1000 mile RT visit to car week. My return route was through central California via highway 101, which had inland temperatures in the high 90s. I used my AC considerably. When I stopped at home I saw a stream of liquid coming from under the driver's side front about 12 inches from the fender and about 12 inches from the front bumper. The fluid was clear and my engine coolant level was not down from my last check. Does anyone know if this is likely from AC condensation, assuming that the condenser is located near the drip? I have never seen this happen before. But, the ambient temperatures have never been so high on such a long drive. 2000 S. Thanks.
If it was odorless and clear and not slippery it's water.
The only thing that can produce water under the car is A/C.
Any other fluid will have different characteristics (coolant is sweet smelling and slippery, power steering fluid is a clear light oil, engine oil will be dark colored oil, automatic transmission fluid is foul smelling oily, brake fluid is oily and irritates skin.
Happy Boxstering,
Pedro

Pedro Bonilla
1998 Boxster 986 - 317,000+ miles: [garage.pca.org]
[www.PedrosGarage.com]
PCA National Club Racing Scrutineer - PCA National HPDE Instructor - PCA Technical Committee (Boxster/Cayman)


Racecar spelled backwards is Racecar

"Racing is life. Anything before or after is just waiting" ... Steve McQueen as Michael Delaney in "LeMans"

"If you wait, all that happens is that you get older"... Mario Andretti

"Being second is to be the first of the ones who lose" ... Ayrton Senna
I checked all the fluids, checked the temperature of the AC system (~50 degrees, on a 90 degree+ day) and tried to find a schematic of the AC condensate drain system. I have a disc with the PET catalog, but that did not show the evaporator drain tube from the cabin housing. That system schematic is also not in my Boxster Bentley repair manual.

I followed the plastic tube that is present above the location of the drip. There is a clip that fastens this tube to the underbody panel. This tube goes under the spare tire well, then is seen again near the battery at the firewall. It goes through the firewall, where I assume it connects to the housing holding the evaporator (where condensate would be present for the AC system).

I have not seen any more liquid dripping from the under-car location since my long drive, even though I have used the AC.

So, I conclude that the drip was condensate from a highly worked AC system.
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