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    Thread: Techincal question for any Haldex controller "experts"

    1. 08-05-2012 02:00 PM #1
      I have opened up a haldex controller unit, to see how it all works. Simple mechanics controlled by a circuit which gets info from ecu.

      Below is 3 pictures of the pin that restricts the flow of the haldex oil.
      picture below with the oil flow fully open - No haldex operation.


      Next is pin half way. Now for the 1st question.
      With the pin in this position, is the haldex on approximately 70/30 power split?


      Lastly, the pin is fully closed.
      This would stop all oil flow and increase pressure on haldex. In this position is the haldex on a 50/50 power split?


      Working on some top secret stuff here
      Last edited by Scullies; 08-05-2012 at 11:39 PM.

    2. 08-05-2012 11:41 PM #3
      Edited now.

    3. Member
      Join Date
      Apr 12th, 2011
      Mk5 R32 #108, 13' Tiguan 4mo, mk2 jetta, 1974 Leyland Mini 1275GT
      08-08-2012 03:26 PM #4
      I wouldnt think the middle position is set value... it may be variable, based on pin position to control flow...

      I dont know just a thought.

      good luck on your secret mission.

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