not another W terminal question - Troubleshooting - VWDiesel.net The IDI, TDI, and mTDI source.

• not another W terminal question by TOW'D on 08 Dec, 2009 07:37
• Howdy Gang,
   The "W" terminal on our 1985 Golf diesel alternator is hooked up , but we don't have a tach.
  I'm not happy with the volts our volt meter is showing- <10v with the heater fan on high 13v with it off
  any suggestions?
  thanks
  hank
• #1 by Peter on 08 Dec, 2009 08:51
• Quote from: TOW'D on 08 Dec, 2009 07:37

  Howdy Gang,
   The "W" terminal on our 1985 Golf diesel alternator is hooked up , but we don't have a tach.
  I'm not happy with the volts our volt meter is showing- <10v with the heater fan on high 13v with it off
  any suggestions?
  thanks
  hank
  

  ...  http://www.vwdiesel.net/forum/index.php?topic=20351.msg155409#msg155409
• #2 by TOW'D on 10 Dec, 2009 08:55
• Does the "W" terminal do anything other than supply a signal for the tach?
  
• #3 by macka on 10 Dec, 2009 10:36
• Quote from: TOW'D on 10 Dec, 2009 08:55

  Does the "W" terminal do anything other than supply a signal for the tach?
  
  

  
  IIRC its the power for the "dummy lights" when you have a gasser
• #4 by Vincent Waldon on 10 Dec, 2009 10:37
• Quote from: TOW'D on 10 Dec, 2009 08:55

  Does the "W" terminal do anything other than supply a signal for the tach?
  
  

  
  It also relays engine speed to the dynamic oil pressure warning system.
• #5 by TOW'D on 10 Dec, 2009 16:20
• Thanks guys,
   I've replaced the dynamic oil pressure warning system with a gauge reading the pressure at the head.
  So that W wire isn't needed
  thanks
  hank