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Heating and Ventilation

Driver side Temperature switch will not work, temp. keeps rolling back to 61 deg.

1. Temp switch on drivers side all of a sudden will not turn Temperature down. You could turn temp up but not down. 

2. Now when I turn the temperature up is just returns to 61 deg.

3. The passenger side still works. 

My 1999 Porsche Boxster does not cool. A/C is not working.

My 1999 Porsche Boxster does not cool. I noticed this after I had the battery replaced by a local shop.

Prior to this, I noticed that pieces of disintegrating dark foam would blow out from the A/C vents and into my car. It still does.

Ventation Problems

Hi Pedro,

Help. My Boxster is a hotbox!

My 986sS Air Conditioning controls stopped working, display shows 71 degrees and cannot change, can this be fixed.

A/C controls are stuck at 71, can make fan speed go up or down and display shows manual but fan vent paths do not show when pushing any of the buttons (defrost, center, or floor).  Can this be fixed or is a new unit required.


Air Vent popped out of dash

Was trying to fix vent and it popped out of dash can’t get it seated properly.  In addition the linkage between the vents came off.  I have all parts and pieces can’t get the linkage on or seated correctly.   Vent above radio for reference.  

Vacuum Purge and Refill Tool

I'm trying to refill the cooling system after replacing te water pump using a Vacuum Purge and Refill /tool.  Since the beast did not come with any kind of instructions, to properly feed and pressureize the system, how many PSI should I set my compressor to.  I have read that the compressor can be set to 80-90 PSI, but since the pressure bleeder valve in the system is designed to pop off at approximately 1 BAR, 14.7 PSI, 80-90 seems way over the top.  Has anyone refilled and oressurized their own system and what pressure setting did they set their compressor to feed air into the system?

Cooling System In Service Mode

I am replacing the Coolant Expansion Tank and was told I had to put the Cooling System in Service Mode.  I'm using a Vacuum Purge/Refill System to pressurize the system, but need to know how to put the Cooling System in Service Mode.  How the heck do I do that.  Thanks for the help.

AC/heat fan needs replacing



I have a noise from behind the glove box that appears to be a bearing failure in the blower fan motor for the AC/Heat.  As I increase/ decrease the fan speed, the noise increases/ decreases.  I guessing that it's time for a new blower motor.  It appears, if I'm looking at the correct thing, that the motor is pretty easy to get to.  Is it fairly simple to replace?  Does anyone have any gouge on replacing the blower fan motor?





HVAC Issues

I am having two issues with my HVAC system, but I don't know if they are related. I am getting bits of thin foam (insulation?) through the dash air vents. With the A/C switched on, there is a water leak onto the passenger side floor. I have checked the drain from the evaporator, which seems clear, but the leak gets worse the longer the A/C is on. When switched off, there is no sign of any water.


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