A/C Blower Fan
 

I would appreciate some insight on a problem I'm experiencing. My a/c / heater blower fan only blows in a high setting. If i manually choose a low (slower) fan speed the fan still blows fast.
If i use the auto climate control you can tell the system is trying to regulate cabin temperature by adjusting the blower fan but it will shut off when it needs to use a slow blower speed.
The temperature control works great and i have a/c and heat but the blower fan only works in a fast blower setting.
I appreciate any advice on this issue.

Fletch

It sounds like your control unit has gone bad. I checked EBay for ya,

http://cgi.ebay.com/ebaymotors/1999-Porsche-Boxster-Heater-A-C-Control-Unit-OEM-LKQ_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c66Q3a2 Q7c65Q3a12Q7c39Q3a1Q7c240Q3a1318Q7c301Q3a1Q7c293Q3 a1Q7c294Q3a50QQ_trksidZp3286Q2ec0Q2em14QQhashZitem 190272422820QQitemZ190272422820QQptZMotorsQ5fCarQ5 fTruckQ5fPartsQ5fAccessories

Just in case it is the bad part.