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Audi S2 running rich

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  • Audi S2 running rich

    A couple of month ago i bought an Audi S2 avant -94. The car had a fire under the hood and some cables was broken. Anyway, everything is fixed now, and the car is runnig, but i have one issue. When I push the throttle to the max the car just cut.. its fine as long as I has the throttle at 3/4

  • #2
    boost leak.... 100%

    search the forum for boost leak testing...
    Honda CBR 1100XX Blackbird Turbo....undergoing major changes.....
    S2 Coupe... bit easier off the line...
    '03 ZX12-R daily hack.... lots of nice bolt ons...

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    • #3
      I did test it already but didn't found any leaks. Can it have something to do with MAF or the O2 sensor? Or is it like you say 100% a leak?

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      • #4
        Btw - what happens if i connect the charcoal canister wrong? I mean - if i plug in the returnline at the wrong spot?

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        • #5
          Do you have VCDS/VagCom?
          Where in Sweden are you located?
          Audi S2 -1994 | 280 HP | 3" SS turboback | Apexi Power Intake | Porsche GT3 Front Brakes
          http://www.garaget.org/?car=52877

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          • #6
            Originally posted by k.alle View Post
            Do you have VCDS/VagCom?
            Where in Sweden are you located?
            No, I don't have it. I live in Kramfors, 80km North of Sundsvall

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            • #7
              how did you test for leaks exactly?
              Honda CBR 1100XX Blackbird Turbo....undergoing major changes.....
              S2 Coupe... bit easier off the line...
              '03 ZX12-R daily hack.... lots of nice bolt ons...

              Comment


              • #8
                Originally posted by LHD_Kid View Post
                how did you test for leaks exactly?
                Took of the hose from the turbo, plugged it with a clamp and pressurize it with a compressor .

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                • #9
                  you mean where the MAF fits? in which case i guess you should have found sonething.... it held 1 bar ok for a while?
                  Honda CBR 1100XX Blackbird Turbo....undergoing major changes.....
                  S2 Coupe... bit easier off the line...
                  '03 ZX12-R daily hack.... lots of nice bolt ons...

                  Comment


                  • #10
                    This is a short clip.
                     

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                    • #11
                      ahhh.... my apologies, i assumed you meant full throttle while actually driving!!!!
                      Honda CBR 1100XX Blackbird Turbo....undergoing major changes.....
                      S2 Coupe... bit easier off the line...
                      '03 ZX12-R daily hack.... lots of nice bolt ons...

                      Comment


                      • #12
                        Originally posted by LHD_Kid View Post
                        ahhh.... my apologies, i assumed you meant full throttle while actually driving!!!!
                        Same thing when I drive. But the car is exactly the same when I disconnect the MAF, do maybe that's the problem.

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                        • #13
                          Hummm -

                          My S2 was running rich - failed the MOT. After changing numerous items - turned out to be the MAF.
                          Previous readings showed Lam at 1:0 but spiking upwards and running at 1:27 ish.
                          After MAF change now running 0.989 to 1:00 and feels generally all round better to drive.
                          Not saying this is THE answer but it solved mine.
                          The limitation of data on VAG-COM is problematic at times.

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                          • #14
                            Originally posted by Bosscat View Post
                            Hummm -

                            My S2 was running rich - failed the MOT. After changing numerous items - turned out to be the MAF.
                            Previous readings showed Lam at 1:0 but spiking upwards and running at 1:27 ish.
                            After MAF change now running 0.989 to 1:00 and feels generally all round better to drive.
                            Not saying this is THE answer but it solved mine.
                            The limitation of data on VAG-COM is problematic at times.
                            I'm pretty sure it's the MAF on my car. Will try to find a new one and see.

                            Comment


                            • #15
                              I just changed the MAF and the car is running worse than before .When I disconnect the car runs fine except I can't floor it without limping. What else can it be?!

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