Boost issues with ur quattro rr engine still!!

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  • steverrquattro
    S2Forum Maniac
    • Oct 2006
    • 787
    • Country: England

    #16
    I found this site quite useful when sorting out a couple of RR's that had similar issues to yours.

    Steve

    1990 RR 20V
    1982 SWB UR - RS2 Engine

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    • robbie100hp
      S2Forum Fanatic
      • Dec 2012
      • 91
      • Country: United Kingdom

      #17
      Fuel lines are all new and it's running a Bosch 044 with new filter so i doubt it's that.

      I will put timing on my list.

      Maf was brand new and cost me £360! But I'll check pins in the connections and the wiring.

      The car didn't put me through the windscreen, it will Rev and boost then struggle high up the Rev range and there after the car wont pull as hard until I turn the ignition of and on again

      Comment

      • steverrquattro
        S2Forum Maniac
        • Oct 2006
        • 787
        • Country: England

        #18
        Originally posted by robbie100hp
        Fuel lines are all new and it's running a Bosch 044 with new filter so i doubt it's that.

        I will put timing on my list.

        Maf was brand new and cost me £360! But I'll check pins in the connections and the wiring.

        The car didn't put me through the windscreen, it will Rev and boost then struggle high up the Rev range and there after the car wont pull as hard until I turn the ignition of and on again
        Hard to tell without pulling the codes but that does sound like a knock sensor. As previously suggested, replace both.

        I would imagine that they are in quite poor condition.
        Steve

        1990 RR 20V
        1982 SWB UR - RS2 Engine

        Comment

        • robbie100hp
          S2Forum Fanatic
          • Dec 2012
          • 91
          • Country: United Kingdom

          #19
          Where would be the best place to buy the two knock sensors? Are they both the same part number?

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          • IshQC
            S2Forum Enthusiast
            • Jan 2013
            • 129
            • Country: United Kingdom

            #20
            Deos it feel like the revs are climbing then then like a slight pause n carry on?
            '83 URQ - Full 20V Conversion - Pearl White
            '85 URQ - 20V Conversion - White
            '88 URQ - Nile Green - SOLD
            '95 RS2 - Ragussa Green
            '95 S2/RS2 Coupe - Blue
            '00 B5 RS4 - White - SOLD
            '01 B5 RS4 - Black

            Comment

            • UrS4boy
              S2Forum Obsessed
              • Feb 2006
              • 11859
              • Country: Canada

              #21
              G61 and G66 Knock Sensor info

              Originally posted by robbie100hp
              Where would be the best place to buy the two knock sensors? Are they both the same part number?
              Not the same PN based on the colour of the end and the length of the cable:

              G61 and G66 Knock Sensor 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




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

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              • robbie100hp
                S2Forum Fanatic
                • Dec 2012
                • 91
                • Country: United Kingdom

                #22
                Originally posted by IshQC
                Deos it feel like the revs are climbing then then like a slight pause n carry on?
                Kind of, it just doesn't pull as hard as it should once it's backed off/limp mode

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                • mike74
                  S2Forum Maniac
                  • Apr 2014
                  • 615
                  • Country: Scotland

                  #23
                  maybe try these guys:
                  http://www.buycarparts.co.uk/search?...del=1&car=1410

                  Comment

                  • Pauliusb2
                    S2Forum Addict
                    • Dec 2014
                    • 361
                    • Country: United Kingdom

                    #24
                    OE054905377A GREEN available from me in bosch 35£
                    oe077905377A BROWN available from me in bosch 40£
                    TOTAL 75£ inc. P&P

                    p.s i have them in stock.

                    Comment

                    • IshQC
                      S2Forum Enthusiast
                      • Jan 2013
                      • 129
                      • Country: United Kingdom

                      #25
                      Originally posted by robbie100hp
                      Kind of, it just doesn't pull as hard as it should once it's backed off/limp mode
                      Mine has the same problem tried everything but knock sensors
                      '83 URQ - Full 20V Conversion - Pearl White
                      '85 URQ - 20V Conversion - White
                      '88 URQ - Nile Green - SOLD
                      '95 RS2 - Ragussa Green
                      '95 S2/RS2 Coupe - Blue
                      '00 B5 RS4 - White - SOLD
                      '01 B5 RS4 - Black

                      Comment

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