Those who run LPG converted 2.2's

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

    #391
    I've done some driving and she runs beautifully, but I noticed check engine light comes on at certain speeds?
    '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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    • diesel des
      S2Forum Possessed
      • Feb 2004
      • 3896

      #392
      Originally posted by hunker7
      I've done some driving and she runs beautifully, but I noticed check engine light comes on at certain speeds?
      The gas times must still be not be close enough to the petrol times. At some points.

      Sent from my LG-H955 using Tapatalk

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

        #393
        I guess only way to adjust is with laptop connected and being on the move?
        '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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        • diesel des
          S2Forum Possessed
          • Feb 2004
          • 3896

          #394
          That's the way to do it best

          Sent from my LG-H955 using Tapatalk

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

            #395
            Originally posted by diesel des
            That's the way to do it best

            Sent from my LG-H955 using Tapatalk
            So I check petrol ms and petrol ms on gas and adjust? I will get my dad to drive it then as that is the only way I can be in charge of the laptop But apart from little things like that it runs perfectly.

            I've also ordered a KME PW2 level sensor so I can get level indicator working finally.
            '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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            • diesel des
              S2Forum Possessed
              • Feb 2004
              • 3896

              #396
              Yes monitor Motronic times on petrol and quickly switch to gas and it should be the same. Get you dad to hold a very steady throttle. And repeat at different loads. Only at high loads when Motronic is open loop should the Lpg be leaner.

              Sent from my LG-H955 using Tapatalk

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

                #397
                The window at which CEL comes on is small, I touch throttle slightly or drop speed slightly it goes off.
                '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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                • diesel des
                  S2Forum Possessed
                  • Feb 2004
                  • 3896

                  #398
                  That is the area you need to concentrate in. The error is for mixture adaption right?

                  Sent from my LG-H955 using Tapatalk

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

                    #399
                    Well just go and drive, and adjust whrn it comes on. I assume so. Because it goes away all the time. I always get it at 75mph in 6th gear for instance.
                    '93 Audi 100 Avant - R.I.P
                    '92 Audi UrS4 Avant - SOLD
                    '93 Audi UrS4 Avant
                    '15 Audi A7 quattro 3.0 TDI

                    Comment

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

                      #400
                      Had to drive on petrol and noticed it was running rich AFR 12 on idle. I assume it can't be caused by lpg ?
                      '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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                      • diesel des
                        S2Forum Possessed
                        • Feb 2004
                        • 3896

                        #401
                        No it's a Motronic issue. Maf?

                        Sent from my LG-H955 using Tapatalk

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

                          #402
                          New reconditioned unit fitted not so long ago.
                          '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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                          • prj
                            S2Forum Zealot
                            • Mar 2010
                            • 6308
                            • Country: Estonia

                            #403
                            Originally posted by hunker7
                            Had to drive on petrol and noticed it was running rich AFR 12 on idle. I assume it can't be caused by lpg ?
                            It can if you let the fuel trims go haywire on lpg.
                            http://tuner.ee - http://www.facebook.com/tuner.ee

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                            • diesel des
                              S2Forum Possessed
                              • Feb 2004
                              • 3896

                              #404
                              Is there a way of seeing the Motronic fuel trims Dmitry? Could help to set up the Lpg system.

                              Sent from my LG-H955 using Tapatalk

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

                                #405
                                Finally got USB to serial adapter, is there any specific settings I should use for wide band?
                                '93 Audi 100 Avant - R.I.P
                                '92 Audi UrS4 Avant - SOLD
                                '93 Audi UrS4 Avant
                                '15 Audi A7 quattro 3.0 TDI

                                Comment

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