A/C with the Top Open?

[flouese]

If my AC worked, I would use it with the top down here in N. FL. Spring project... ($$$)
Any Jacksonville Porsche owners know a reliable and reasonable AC shop? Blows ambient temp air. Charged it, but no go...

[Jamesp]

Originally Posted by flouese

If my AC worked, I would use it with the top down here in N. FL. Spring project... ($$$)
Any Jacksonville Porsche owners know a reliable and reasonable AC shop? Blows ambient temp air. Charged it, but no go...

More than likely the foam has left your heater box. I just replaced the foam in mine. Without the foam, a good portion of the cold air from the AC evaporator runs through the heater core. The heater core always has hot coolant running though it when the engine is running so you get lukewarm AC.

After replacing the foam in mine it was apparent that a partial fix is possible by removing the heater core and putting foam (or perhaps easier, aluminum AC tape) on the heater door to cover the holes in the door you can see. Depending on how good a job you can do covering the holes that's at best about an 85% solution as you likely wont get a complete seal. Additionally there is another door that is not visible with the heater core out. This door's job is to shut off all the cabin vents to direct air to the defrost or foot well vents. You can just close all the manual vents on the dash to do this if you want more defrost and less air in your face.

Or, you can opt to remove then entire dashboard and pull and disassemble the heater box.

[Larrymal2]

How difficult was it to replace the foam? I just bought a 99 boxster and it blows small chunks of foam out the dash vents intermittently. My a/c blows cool air. With the top and windows closed it barely can keep up. Set at 71°F in auto mode the fan never slows down. I have tried both normal and recirculate settings. Manual mode is the same. I live in GA and it has been 90°F here.

[ExplorerLyon]

Originally Posted by Larrymal2

How difficult was it to replace the foam? I just bought a 99 boxster and it blows small chunks of foam out the dash vents intermittently. My a/c blows cool air. With the top and windows closed it barely can keep up. Set at 71°F in auto mode the fan never slows down. I have tried both normal and recirculate settings. Manual mode is the same. I live in GA and it has been 90°F here.

Follow this tread. I just did mine last night, took 3 hours start to finish. Most of the time was spent cleaning off the old foam on the flaps and getting the holes taped up.

Small foam pieces blowing from vents

[10/10ths]

...super freaking humid.

I run the AC with the top down all of the time.

Just make sure you are not in "recirculating" mode with the top down. always use outside air when the top is down. if you see that circle of arrows, turn it off.