The fan for the AC/heat will run slowly for less than a minute and then stop. I pulled it out and it does the same thing. If I give it some help after it stops it will run for a bit and then stop. While researching a replacement I came across a note about a resistor that controls this fan. Any way to know what the cause of the problem is without just replacing parts.
IDK about the resistor, but it seems to me that the motor is shot since it runs for a bit with a nudge and then stops again. Did you test the voltage coming to the motor?
@Road Runner
You should state the model/year in your questions. In fact, why not put it in your signature so it will always be there in the future?
I don't know much about the HVAC in our cars but I think there are some minor differences between 987.1 and 987.2. I've had my temp/fan control module out several times and I doubt there's a pot in there to control the fan current (voltage). I agree it sounds like the motor is going out. What happens when you increase the fan setting to the max? Does the fan still stop?
As
@RSchwerer
points out - knowing the year of your 987 might help give useful advice. As everyone else suggested - the failure mode points to the fan itself. Question - if removed - held in your hand, and you give the squirrel cage a good spin does it keep spinning or does it rather quickly come to a stop?
There are oil-lite bearings used in this sort of motor that can eventually dry out and cause this sort of thing. On some fans the bearings are accessible - and a drop or two of light oil on them will soak back into the bearing material (a sintered bronze - meaning it's porous) and the fan will be as good as new. The problem is - that many modern fans make those bearings difficult to impossible to get to... but worth a look I think. If you can't lubricate it - then it's time to think about replacement. It's probably identical to some VW fan - the best way I've found to track down cross-uses and better prices is googling the manufacturer's model number which is frequently cast into the fan body somewhere.
Ah - a quick search came up with:
Amazon.com: AEagle AC Heater Blower Motor Fan Assembly for Volkswagen Beetle GTI Golf Jetta 1998-2010 | Porsche Boxster Cayman 911 | Quattro 2000-2006 Replaces 1J1819 021C, 700158 : Automotive
- sure enough a VW fan, and less than $40 from Amazon. VS the Porsche OEM one:
Porsche Boxster Blower Motor Assembly Parts | FCP Euro
- a 10X price difference.
No brainer. I'd just replace it.
That price difference is just astounding.
Porsche
Tax is alive and well.
BUTTTTT.... you can get free coffee if you order it through your local dealer...
