[T3] fresh air fan switch

[Bob Rogers]

I have replaced the fresh air fan switch on my '73 Squareback and checked for voltage at the switch.  All seems to be fine.  The motor does not operate.  The Bentley indicates there is an in-line fuse.  I can't fine it.  What's my best course of action--remove the motor?
  ----- Original Message ----- 
  From: Jim Adney 
  To: type3 at vwtype3.org 
  Sent: Monday, November 15, 2010 7:59 AM
  Subject: Re: [T3] fresh air fan switch


  On 14 Nov 2010 at 22:37, alluringeyewear at comcast.net wrote:

  > I also need a fresh air fan switch for my '73 fastback FI. It works
  > fine on high speed but nothing on low. I tried cleaning the contacts
  > but nothing on low. 

  I'm afraid that's not a switch problem. There's a resistor built into 
  the '73 fan and those have a rather poor failure rate. Mine is dead 
  right now, too. It's a 1 Ohm power resistor, but it's quite hard to 
  get to. VW actually sold them as a replacement part, but the better 
  option would be to replace the whole fan and housing with one from an 
  earlier car. Those use a different motor that has a low speed winding 
  and don't use the resistor.

  -- 
  *******************************
  Jim Adney, jadney at vwtype3.org
  Madison, Wisconsin, USA
  *******************************

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