Air mass testing rs2

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  • dobbin
    S2Forum Enthusiast
    • Jan 2011
    • 164
    • Country: Wales

    #1

    Air mass testing rs2

    When testing my rs2 air mass meter engine running voltage between 1 and 3 pins should be between
    3 and 5 volts depending on the revs used but on mine it's only just going over 3 volts at 4000 rpm where as the copy Chinese one that's new shows 3.5 volts and climbs to that much quicker than the original unit . I'm trying to find out why the car won't full boost intermittent fault mrc says it's air mass meter
    But my original bosch unit has only done 4000 miles from new 2 years old now .
    Anyone else had this problem.
    I bought the copy one with the intension of fitting the rs4 sensor subject to anyone else saying it can be done
  • UrS4boy
    S2Forum Obsessed
    • Feb 2006
    • 11859
    • Country: Canada

    #2
    G70 MAF testing

    G70 MAF Info:

    The Audi Enthusiast website. Forums for all Audis including A4, S4, A5, S5, A6, S6, allroad, A8, S8, TT, R8, Q5, Q7, 4000, 100, 200, v6, v8, vintage, local forums


    MAF testing worksheet:



    RS2'd 93 UrS4 5 spd sedan
    94 UrS4 V8 6 spd manual avant

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    • vidar skotheim
      S2Forum Maniac
      • Apr 2005
      • 566
      • Country: Norway

      #3
      The copys i have tested ( with wide band ) gives more fuel. same result as original s2 maf will give on a rs2 . Wil be to rich on normal driving .

      Comment

      • Joop
        S2Forum Fanatic
        • May 2015
        • 89
        • Country: Germany

        #4
        if you have acces to vag-com you can measure MAF values as describe in:

        block 003

        But i don't know the properly values for RS2

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