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Boost gauge..for the 3rd time

Discussion in 'A3/S3 Forum (8L Chassis)' started by BigD-a3tq, Jun 6, 2010.

  1. BigD-a3tq

    BigD-a3tq Member

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    after hitting problems with the wiring i finally got round to connecting the boost hose today, i have t'eed off of the FPR but im not getting a reading at all?

    if i disconnect the hose from the back of the gauge i am getting a 'suck' effect rather than a 'blow'
    (probably not the best words to describe this but most accurate :yum:!)
    can anyone confirm if this is right?

    It is a stack mechanical gauge and the thing that is worrying me is that i took it to bits to paint the back of the dial red and i fear ive probably fooked it in the process!

    Any ideas chaps?
     
  2. Sandip

    Sandip Well-Known Member

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    Sounds right really, mine also shows vacuum on idle. Aslong as it shows boost when you put you foot down its all good:)
     
  3. S3 Paul

    S3 Paul Well-Known Member
    Regional Rep

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    When conected and the car is at idle there should be vacume.
    Mine shows near 20 psi negative boost ( vacume ) this my well differ car to car but... you get the idea
     
  4. BigD-a3tq

    BigD-a3tq Member

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    the needle doesn't move atall!? whether idle or driving!?
     
  5. paulypaul

    paulypaul S3 all the way Baby

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    id be taking apart the gauge again if your getting
    vacuum.
     
  6. sportstractor

    sportstractor Chugger

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    Should be getting zero with gauge dissconnected, unless you live 3 miles above sea level
     

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