ETA running really strangely. swapped lots of sensors and still.

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  • 2.5-12
    E30 Mastermind
    • Jan 2010
    • 1814

    #1

    ETA running really strangely. swapped lots of sensors and still.

    the car in question is a 1985 ETA

    we just did a ton of work on it and now, its back together and it wont run right.

    we've replaced in the last week on the car
    1.) timing belt
    2.) FW
    3.) clutch
    4.) 02 sensor
    5.) plugs
    6.) wires
    7.) dizzy cap and rotor
    8.) AFM
    9.) intake boot

    cleaned ICV, still runs like poopy.

    any ideas? nothing in the search was quite like this just because of how much shit I have replaced at once
    1991 E30 M3 Brilliant/black - S54B32/5M
    1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
    2011 E82 1M VO/blk/6M
    1991 E31 850i red/grey/6M
    1997 F355 spider red/tan/6M
  • 2.5-12
    E30 Mastermind
    • Jan 2010
    • 1814

    #2
    1991 E30 M3 Brilliant/black - S54B32/5M
    1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
    2011 E82 1M VO/blk/6M
    1991 E31 850i red/grey/6M
    1997 F355 spider red/tan/6M

    Comment

    • SpecM
      R3V Elite
      • Oct 2005
      • 4531

      #3
      vaccum leak. I'd put money on it
      1989 cirrisblau-metallic 325i

      Comment

      • jlevie
        R3V OG
        • Nov 2006
        • 13530

        #4
        I agree with SpecM. Have a smoke test run on the intake to find all of the intake leaks.
        The car makes it possible, but the driver makes it happen.
        Jim Levie, Huntsville, AL

        Comment

        • 2.5-12
          E30 Mastermind
          • Jan 2010
          • 1814

          #5
          ill give it a go. would seem weird that it ran fine with the broken boot but cant run with the new boot.

          time to break out the crab cleaner as I don't have an intake fogger
          1991 E30 M3 Brilliant/black - S54B32/5M
          1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
          2011 E82 1M VO/blk/6M
          1991 E31 850i red/grey/6M
          1997 F355 spider red/tan/6M

          Comment

          • slo325i
            E30 Addict
            • Aug 2008
            • 417

            #6
            Timing set ok?


            '89 325i - Totaled... good bye my love...
            '87 327i budget stroker - SOLD!!!
            '92 240sx - ca18det powered drift toy - SOLD!!!
            '89 325i - coupe - NEW daily
            '96 Audi A6 Quattro- Grocery getter/baby hauler
            '99 Busa - weekend wheelie monster

            Comment

            • 2.5-12
              E30 Mastermind
              • Jan 2010
              • 1814

              #7
              yeah, just did the belt and made sure it was set properly

              the only other thing I can think of is: we just did the clutch and flywheel, does it matter where the slug was oriented before on the old flywheel?

              car seemed to run ok with open headers too for some reason
              1991 E30 M3 Brilliant/black - S54B32/5M
              1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
              2011 E82 1M VO/blk/6M
              1991 E31 850i red/grey/6M
              1997 F355 spider red/tan/6M

              Comment

              • 2.5-12
                E30 Mastermind
                • Jan 2010
                • 1814

                #8
                got it to idle properly, now whenever i touch the gas, it misfires like crazy and loses revs.
                1991 E30 M3 Brilliant/black - S54B32/5M
                1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
                2011 E82 1M VO/blk/6M
                1991 E31 850i red/grey/6M
                1997 F355 spider red/tan/6M

                Comment

                • hara
                  Noobie
                  • May 2010
                  • 3

                  #9
                  Just out of curiosity: how did you manage to have it idle properly?

                  Comment

                  • 2.5-12
                    E30 Mastermind
                    • Jan 2010
                    • 1814

                    #10
                    jammed in the ICV hose as hard as I could
                    1991 E30 M3 Brilliant/black - S54B32/5M
                    1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
                    2011 E82 1M VO/blk/6M
                    1991 E31 850i red/grey/6M
                    1997 F355 spider red/tan/6M

                    Comment

                    • Kershaw
                      R3V OG
                      • Feb 2010
                      • 11822

                      #11
                      what about if you just unplug the icv?

                      and nothing really compares to a fogger. its worth it to go to a shop and have it done.
                      AWD > RWD

                      Comment

                      • 2.5-12
                        E30 Mastermind
                        • Jan 2010
                        • 1814

                        #12
                        unplug it from power or from the IM?
                        1991 E30 M3 Brilliant/black - S54B32/5M
                        1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
                        2011 E82 1M VO/blk/6M
                        1991 E31 850i red/grey/6M
                        1997 F355 spider red/tan/6M

                        Comment

                        • Eric Giles
                          E30 Enthusiast
                          • Oct 2003
                          • 1068

                          #13
                          Ok, question-you said you replaced the flywheel. Did you buy a new Luk dual mass flywheel that is listed for the eta engine? If so, did you 100% fully verify that it has the small 'slug' as you say on the edge of the flywheel?
                          Eric Giles
                          '20 M2 CS
                          '04 M3
                          '11 X5 35D
                          '87 325is
                          '91 325i Sport

                          There are few things more expensive than a cheap BMW...

                          Comment

                          • 2.5-12
                            E30 Mastermind
                            • Jan 2010
                            • 1814

                            #14
                            yes. the single mass is from my 86 325es. it has the slug

                            the only thing is, i didn't pay attention to the orientation before re assembly, im thinking if its lines up differently, it may be causing the problems.

                            may have to convert to motronic 1.3 after all.
                            1991 E30 M3 Brilliant/black - S54B32/5M
                            1990 E30 318iT RHD Lagunagrun/tan - S52B32Turbo/5M
                            2011 E82 1M VO/blk/6M
                            1991 E31 850i red/grey/6M
                            1997 F355 spider red/tan/6M

                            Comment

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