engine speed sensor

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  • Bullysteeth
    S2Forum Maniac
    • Jan 2012
    • 830
    • Country: England

    #1

    engine speed sensor

    wot does it do,
  • rj scotty
    S2Forum Fiend
    • May 2006
    • 2195
    • Home: United Kingdom Current: England

    #2
    Have you scanned your car with ignition on but engine not running by any chance?
    sigpic
    "For what you spent on that you could have brought a new car"
    BUT I DON'T WANT A NEW CAR!

    1995 S2 Avant, Volcano Black
    1982 VW Golf Mk1, primer yellow, will be finished one day, maybe.
    2003 VW T4 long nose X pack, (has become project)

    Comment

    • Bullysteeth
      S2Forum Maniac
      • Jan 2012
      • 830
      • Country: England

      #3
      no it was running when i poped in to see it, and connected to the diag, cleared the fault and it didn't come back, but we'll see when its back in a couple of days, so wot does it do bud

      Comment

      • rj scotty
        S2Forum Fiend
        • May 2006
        • 2195
        • Home: United Kingdom Current: England

        #4
        It tells the ecu that the engine is spinning and at what speed.

        Just be aware that if you scan with the ignition on and engine not running you will always get the speed sensor fault even though there is nothing wrong, its just a quirk with these cars
        sigpic
        "For what you spent on that you could have brought a new car"
        BUT I DON'T WANT A NEW CAR!

        1995 S2 Avant, Volcano Black
        1982 VW Golf Mk1, primer yellow, will be finished one day, maybe.
        2003 VW T4 long nose X pack, (has become project)

        Comment

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

          #5
          G4 crank position and G28 engine speed sender info

          Originally posted by Bullysteeth
          wot does it do,
          Tells the ECU what the engine speed (RPM) is. It does this by counting the teeth on the ring gear (138/rev IIRC) on the flywheel. Important to engine starting and running. More info by clicking on the link and then on the G28 label on the upper right side of the diagram:

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

          Comment

          • Bullysteeth
            S2Forum Maniac
            • Jan 2012
            • 830
            • Country: England

            #6
            Originally posted by UrS4boy
            Tells the ECU what the engine speed (RPM) is. It does this by counting the teeth on the ring gear (138/rev IIRC) on the flywheel. Important to engine starting and running. More info by clicking on the link and then on the G28 label on the upper right side of the diagram:

            http://members.shaw.ca/speedtek/UrS%...ice%20Map.html
            Top man, reading that it may be filthed up

            Comment

            • vonbeck
              S2Forum Fiend
              • Feb 2004
              • 2455
              • Country: England

              #7
              i think mines filthed up but dont want to take it out in case i break it will get a new one first, do i ask for a G28 speed sensor or has anybody got the part number
              ABY Cricket Green Pearl Coupe, blk leather
              THE ONLY TROUBLE WITH DOING NOTHING IS KNOWING WHEN YOUR FINISHED!!!

              Comment

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

                #8
                Originally posted by vonbeck
                i think mines filthed up but dont want to take it out in case i break it will get a new one first, do i ask for a G28 speed sensor or has anybody got the part number
                PNs are in the link I posted above.
                RS2'd 93 UrS4 5 spd sedan
                94 UrS4 V8 6 spd manual avant

                Comment

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