Engine cutting out

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  • bilko0795
    S2Forum Extremist
    • Feb 2011
    • 1883
    • Country: Wales

    #1

    Engine cutting out

    As per my last post on my thread vcds 00561
    I just plugged the car in and it’s showing no faults car started fine and run 30 mins without cutting out iv checked the maf connection replaced the fuel pump relay also fpr all ok the only thing i found is no 2 coil pack is a very loose fitting no 3 is a little loose where the others are tight would this cause the car to cut out?
  • John.
    S2Forum Fiend
    • May 2012
    • 2615
    • Country: Scotland

    #2
    Ignition switch problem maybe??

    Comment

    • Tractor Dave
      S2Forum Zealot
      • Dec 2017
      • 5983
      • Country: Wales

      #3
      An intermittent fault is always more difficult to find.
      You just need to work your way methodically through everything. It's probably only a loose/damaged wire or sensor.
      Nothelle S2 Avant
      Black Ur project
      Silver Rs2 Project gone
      Ocianic Ur project gone
      S2 Coupe project gone
      Urs6 plus project gone

      Comment

      • bilko0795
        S2Forum Extremist
        • Feb 2011
        • 1883
        • Country: Wales

        #4
        Where do you start? all other advice on the net points to maf which seems ok even with the spare i have so is it electrical or fuel related ?

        Comment

        • Tractor Dave
          S2Forum Zealot
          • Dec 2017
          • 5983
          • Country: Wales

          #5
          There is a good thread on here that you can follow. It could be fuel or electrical.


          Nothelle S2 Avant
          Black Ur project
          Silver Rs2 Project gone
          Ocianic Ur project gone
          S2 Coupe project gone
          Urs6 plus project gone

          Comment

          • bilko0795
            S2Forum Extremist
            • Feb 2011
            • 1883
            • Country: Wales

            #6
            Thanks will check it out

            Comment

            • newsh
              S2Forum Obsessed
              • Aug 2003
              • 16226
              • Country: United Kingdom

              #7
              Originally posted by bilko0795
              Where do you start? all other advice on the net points to maf which seems ok even with the spare i have so is it electrical or fuel related ?
              What were the symptoms again? It’s just randomly cutting out?

              Have you actually changed the maf connector pins or cleaned them by removing from the connector shell and using 1000 grit wet and dry as discussed in the maf connector thread?
              Having said that, maf connector would cause poor running, not engine actually dying.

              Also I think you were talking about changing the fuel pump?

              S2 Coupe 3B Project


              Ur quattro restoration

              S2 Avant

              Boost is the new rock and roll!
              sigpic

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              • bilko0795
                S2Forum Extremist
                • Feb 2011
                • 1883
                • Country: Wales

                #8
                The guy that did all the gaskets is coming up tomorrow he reckons it could be the idle control valve I didn’t think of that one I changed it last year so hopefully it’s as easy as that.

                Comment

                • theyagaraj
                  S2Forum Fanatic
                  • Feb 2010
                  • 57
                  • Country: United States

                  #9
                  Hi
                  i am having a similar problem : I changed the throttle body and idle stabiles valve . The wiring in engine compartment is brittle from age and heat and I think it’s the wiring that is breaking down : let me know if you solve your problem :

                  Comment

                  • bilko0795
                    S2Forum Extremist
                    • Feb 2011
                    • 1883
                    • Country: Wales

                    #10
                    Found the fault I think! replaced fuel pump relay and pump everything seems ok no problems yet

                    Comment

                    • Northcliff Wood
                      S2Forum Hobbyist
                      • Mar 2020
                      • 13
                      • Country: United States

                      #11
                      Nice! Glad that it's all been settled now.

                      Comment

                      • bilko0795
                        S2Forum Extremist
                        • Feb 2011
                        • 1883
                        • Country: Wales

                        #12
                        Fingers crossed

                        Comment

                        • BLAMM0
                          S2Forum Addict
                          • Aug 2010
                          • 337
                          • Country: Lithuania

                          #13
                          Hi, sorry for the revival. But how do I remove the connectors to replace them? Is there a special tool or something? Thanks.

                          Comment

                          • 20Vcqdriver
                            S2Forum Maniac
                            • Jun 2007
                            • 829
                            • Country: United Kingdom

                            #14
                            Reviving this as mine has started an intermittent fault where you are driving normally, not on boost but gentle acceleration and cruising and the car just cuts out, Pull over, turn the ignition off and back on and it starts and runs fine for a while then cuts out again,
                            Lost confidence in it at the moment as worry it'll cut out somewhere such as halfway around a roundabout or something.
                            Nothing obvious. Trying to locate a seemingly impossible to find Spare MAF at the moment and also wondering if it could be one of the flywheel sensors or knock sensors. Not much else to go wrong on these compared to a modern car?!!
                            Any suggestions
                            1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
                            2004 A4 2.5TDi convertible, re-mapped to 180bhp
                            2011 A5 sportback 3TDi-Backbox delete, remap

                            Comment

                            • hunker7
                              S2Forum Possessed
                              • Mar 2014
                              • 3487
                              • Home: Latvia Current: United Kingdom

                              #15
                              Thermal fuses?
                              '93 Audi 100 Avant - R.I.P
                              '92 Audi UrS4 Avant - SOLD
                              '93 Audi UrS4 Avant
                              '15 Audi A7 quattro 3.0 TDI

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