Alternator or not

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  • Big_kev
    S2Forum Enthusiast
    • Dec 2006
    • 159
    • Country: Scotland

    #1

    Alternator or not

    could anyone help.

    I have the alternator light on the dash coming on faintly every so often and when this starts the ABS light starts flickering on and off. Is this a related sympton, just bad luck or some other off world power trying to talk to me.
  • BRY
    S2Forum Possessed
    • Nov 2004
    • 3755
    • Home: United Nations Current: Vietnam

    #2
    What is the volt gauge in the centre showing?
    Kingdoms are run by Kings, Dictatorships are run by Dictators.
    England must be a Country. :mischeif:

    Comment

    • Keeper of The Kitten
      S2Forum Fiend
      • Dec 2003
      • 2317
      • Country: England

      #3
      Haha! More likely worn out brushes on the alternator ...but I have no idea about the effect it might have on the abs.
      Martin Cutting

      aka Keeper of "The Teutonic Kitten"

      It's not better than sex, but it runs it a close second.

      Comment

      • mcandmar
        S2Forum Zealot
        • Apr 2004
        • 5118
        • Country: Ireland

        #4
        Sounds like the rectifier/voltage regulator thingy in the alternator. I had the same and it only got worse until it had no charge under 2000rpms. Keep it above 2k and the red light went out. ABS light does ring a bell, i think it might turned off for me too.

        P.S. It was the only time i ever found the volt gauge usefull, keep an eye on it and see whats going on.
        91CQ20v - Gone to a new home
        93UR-S4 - The Magic Carpet
        94S2Bus - The Emerald Express

        Comment

        • s2driveruk
          Super Moderator
          • Jul 2003
          • 12696
          • Country: England

          #5
          hmm i;m getting no charge until about 40mph and higher than 2000rpm so is that definately the regulator and if so anyone got a price/part number. My Alternator is for a 3b a/c equipped verson (110amps?)
          sigpic

          1992 3b S2 Coupe

          Comment

          • pastures16
            S2Forum Fiend
            • Nov 2004
            • 2058
            • Country: United Kingdom

            #6
            might be 028 903 803 d or dx bosch unit sorry album gone done
            94 s2 avant
            aoc member 1116

            Comment

            • Pirvu Eugen
              S2Forum Extremist
              • Apr 2007
              • 1978
              • Country: Romania

              #7
              at 3b the ABS unit gets an 12 v input from the blue wire from alternator. If the alternator is not ok. the ABS will swich off. That blue wire is the same with the one from the dash warning light.
              I think that you should change first the regulator and then think at other expensive stuff.

              Comment

              • s2driveruk
                Super Moderator
                • Jul 2003
                • 12696
                • Country: England

                #8
                does anyone have a part number for the 15v regulator?
                sigpic

                1992 3b S2 Coupe

                Comment

                • s2driveruk
                  Super Moderator
                  • Jul 2003
                  • 12696
                  • Country: England

                  #9
                  just spoken to a Bosch main agent who tells me they will have to make contact with bosch in Germany to obtain details about availability/prices etc? Anyone successfully managed to locate one in the UK, if so where
                  sigpic

                  1992 3b S2 Coupe

                  Comment

                  • Acidburn
                    S2Forum Obsessed
                    • Jun 2007
                    • 13459
                    • Country: United Kingdom

                    #10
                    If its still there my garage will have a look later.

                    Comment

                    • s2driveruk
                      Super Moderator
                      • Jul 2003
                      • 12696
                      • Country: England

                      #11
                      just spoken to a helpful guy at Bosch Technical Support.

                      For Reference the Bosch voltage regulator part number against the Audi number posted above is 1197 311 548 for the 14v version.

                      £27.99 ordered through Camberley Auto Factors, postage £7.50 from Bosch.
                      Last edited by s2driveruk; 19 December 2007, 17:01. Reason: updated with price
                      sigpic

                      1992 3b S2 Coupe

                      Comment

                      • Pirvu Eugen
                        S2Forum Extremist
                        • Apr 2007
                        • 1978
                        • Country: Romania

                        #12
                        14 V. Don't go over 14... will kill the batery!

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