Announcement

Collapse
No announcement yet.

Engine Cut Out Around 4500 RPM

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Engine Cut Out Around 4500 RPM

    I have an RS2 ADU fitted into a URQ. At first it wouldn't start because of the immobilized ECU and as such I purchased a set of the 395 BHP chips. At this point the car started and drove.

    My issue is that when the car gets up to around 4000 rpm, it starts to flutter for the next 500 revs and then seems cut out as soon as it hits 5000 RPM. I might also add that this is under wide open throttle.

    I've connected a boost gauge and it is showing between 18 and 20 psi.

    Any ideas?
    Steve

    1990 RR 20V
    1982 SWB UR - RS2 Engine


  • #2
    If it's running original style coil pack with ICMs, I would do conversion to tfsi style coils first.

    Comment


    • #3
      still running original fuel pump?

      Comment


      • #4
        Originally posted by mike74 View Post
        still running original fuel pump?
        No, replaced with Bosch 044.
        Steve

        1990 RR 20V
        1982 SWB UR - RS2 Engine

        Comment


        • #5
          Inlet air sensor?

          Did you manage to run Vagcom on it?

          S2 Coupe 3B Project


          Ur quattro restoration

          S2 Avant

          Boost is the new rock and roll!
          sigpic

          Comment


          • #6
            Originally posted by newsh View Post
            Inlet air sensor?

            Did you manage to run Vagcom on it?
            Not got it. Where can I get a copy and leads from?
            Steve

            1990 RR 20V
            1982 SWB UR - RS2 Engine

            Comment


            • #7
              Retrieving ECU Fault codes - Please learn how

              Originally posted by steverrquattro View Post
              Not got it. Where can I get a copy and leads from?
              Three ways to pull DTC codes:

              Retrieving ECU Fault codes - Please learn how:

              http://forums.quattroworld.com/s4s6/msgs/323125.phtml

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

              Comment


              • #8
                I can vagcom it for you too if you're still round this way?

                S2 Coupe 3B Project


                Ur quattro restoration

                S2 Avant

                Boost is the new rock and roll!
                sigpic

                Comment


                • #9
                  Originally posted by UrS4boy View Post
                  Three ways to pull DTC codes:

                  Retrieving ECU Fault codes - Please learn how:

                  http://forums.quattroworld.com/s4s6/msgs/323125.phtml

                  Brilliant!
                  Steve

                  1990 RR 20V
                  1982 SWB UR - RS2 Engine

                  Comment


                  • #10
                    Does the Rev counter momentarily drop to zero ? Similar symptoms to mine where it was in fact problems with chips.

                    Comment


                    • #11
                      Originally posted by andyg plym View Post
                      Does the Rev counter momentarily drop to zero ? Similar symptoms to mine where it was in fact problems with chips.
                      Yes, it does.
                      Steve

                      1990 RR 20V
                      1982 SWB UR - RS2 Engine

                      Comment


                      • #12
                        Change chips bud, what you running ?

                        Comment


                        • #13
                          Two weeks ago I inspired myself after the car failed the MOT. Spending a good four hours fixing everything made me realise that work over the last two years had taken me away from my passion.

                          So, I am back to this problem. This weekend I will be:

                          1. Fitting new plugs.
                          2. Fitting new coilpacks.
                          3. Leak testing with the help of Mac2226 and his fancy smoke machine.
                          4. Reading the codes with some device I got off e-bay.

                          This car is so slow, I think my wifes Peugeot 307 would beat it in a straight line! I just hope it is not the chips after spending a small fortune.

                          Updates to follow.

                          PS AndyP, feel free to come over (I need to give you my new address) as it's been a while :-)
                          Steve

                          1990 RR 20V
                          1982 SWB UR - RS2 Engine

                          Comment


                          • #14
                            2 years and you've still not fixed it?!

                            PM me your new address and I'll try and get over
                            sigpic
                            1991 Audi S2 3B - 2.5 Stroker engine
                            1997 A6 2.5TDi quattro avant - C4
                            1976 RD250E / 350LC cafe racer

                            Comment


                            • #15
                              I had the same issue happen on my S4... the issue for me was the Tune. I'm running vems ECU so I was able to see the fault. But the car started to run lean between 4500 and 5k. I'd see if maybe a new chip or new ECU might solve your problem.

                              Comment

                              Working...
                              X