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    m42 bogging out?! no vacuum leaks

    Hey guys,

    So i recently purchased a 91 318i. The car has 236k but has been very well taken care of.

    But to get to the point, the car started having very bad bogging issues lately. Its not sending a CEL code (1444....no fault) and i checked if there were any vacuum leaks with some carb cleaner, and i havent found the culprit to what is causing my m42 to run so shitty!!
    The car will lose power and eventually die if the rpms arent kept above 2k (when im driving). if im at a stop, it idles fine. driving is when my car loses power.

    any ideas??! the "mess under the intake" mod hasnt been done yet either...

    Any help would be much appreciated!

    -Brad, AlphaTeam Motorwerks, LLC
    91' 318iS - S54/6MT Swapped
    08' E90 M3 6MT - Daily
    04' Chevy Duramax CCLB - Work Truck/Hauler


    Originally posted by IronJoe
    Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

    Originally posted by 2mAn
    Brads a standup guy even though he likes buttsex

    #2
    TPS? Try popping in a good working ECU also.
    Originally posted by Gruelius
    and i do not know what bugg brakes are.

    Comment


      #3
      Originally posted by KenC View Post
      TPS? Try popping in a good working ECU also.
      im sorry, im a noob when it comes to the m42...two past e30s were m20s.

      TPS means throttle position sensor correct?
      what about the ICV??
      -Brad, AlphaTeam Motorwerks, LLC
      91' 318iS - S54/6MT Swapped
      08' E90 M3 6MT - Daily
      04' Chevy Duramax CCLB - Work Truck/Hauler


      Originally posted by IronJoe
      Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

      Originally posted by 2mAn
      Brads a standup guy even though he likes buttsex

      Comment


        #4
        Idle control valve
        Originally posted by bmwm42
        PNW vulture pm me for parts
        Strategic nw e30 command

        Comment


          #5
          un plug the black and white wire

          Turbo M42 Build Thread :Here
          Ig:ryno_pzk
          I like the tuna here.
          Originally posted by lambo
          Buttchug. The official poster child of r3v.

          Comment


            #6
            same issues that i had! on the freeway it died and same symptons if i would let the rpms drop to 2k it wouldnt accelerate and it would start to choke, check your fuel pump!, clean your icv, and re-route the hoses like i did! a temporary fix to check for vaccum leaks most likely is coming from this


            this is the fuel pump i took out of my car...
            it looks sketchy!

            Comment


              #7
              if fuel pump was bad, wouldnt the cel shoot me a code??
              imma clean the ICV tomorrow and check the hoses.

              hopefully it isnt something major...i wanna start upgrading my suspension! lol
              -Brad, AlphaTeam Motorwerks, LLC
              91' 318iS - S54/6MT Swapped
              08' E90 M3 6MT - Daily
              04' Chevy Duramax CCLB - Work Truck/Hauler


              Originally posted by IronJoe
              Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

              Originally posted by 2mAn
              Brads a standup guy even though he likes buttsex

              Comment


                #8
                My fuel pump was bad check it didn't have compression at times. And the computer didn't give me a code It kept on throwing 1221 which is vaccum, afm, etc
                I say re route the hoses clean your icv and see how it does

                Comment


                  #9
                  Originally posted by ///digitalme View Post
                  My fuel pump was bad check it didn't have compression at times. And the computer didn't give me a code It kept on throwing 1221 which is vaccum, afm, etc
                  I say re route the hoses clean your icv and see how it does

                  well the comp is giving me 1444 which is no code, so maybe ill check the fuel pump!

                  thanks for all the help!
                  -Brad, AlphaTeam Motorwerks, LLC
                  91' 318iS - S54/6MT Swapped
                  08' E90 M3 6MT - Daily
                  04' Chevy Duramax CCLB - Work Truck/Hauler


                  Originally posted by IronJoe
                  Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

                  Originally posted by 2mAn
                  Brads a standup guy even though he likes buttsex

                  Comment


                    #10
                    Originally posted by ///digitalme View Post
                    My fuel pump was bad check it didn't have compression at times. And the computer didn't give me a code It kept on throwing 1221 which is vaccum, afm, etc
                    I say re route the hoses clean your icv and see how it does

                    can you take a clearer pic of how you re routed your vac hoses??

                    im assuming your talking about the hose that goes from the top of the valve cover, to underneath the intake??
                    -Brad, AlphaTeam Motorwerks, LLC
                    91' 318iS - S54/6MT Swapped
                    08' E90 M3 6MT - Daily
                    04' Chevy Duramax CCLB - Work Truck/Hauler


                    Originally posted by IronJoe
                    Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

                    Originally posted by 2mAn
                    Brads a standup guy even though he likes buttsex

                    Comment


                      #11
                      Yes I can take a picture just added a hose to hook it up it goes under the throttle body and the icv goes in the boot! It should idle better!

                      Comment


                        #12
                        nice, lemme know! i just temporarily taped up the cracked areas until i can get my hoses in. but i still have a huge crack where the valve cover hose extends underneath the manifold....shits annoying!
                        -Brad, AlphaTeam Motorwerks, LLC
                        91' 318iS - S54/6MT Swapped
                        08' E90 M3 6MT - Daily
                        04' Chevy Duramax CCLB - Work Truck/Hauler


                        Originally posted by IronJoe
                        Alpha Team: running through e30s, gringo icebergs, and 19 yr olds.

                        Originally posted by 2mAn
                        Brads a standup guy even though he likes buttsex

                        Comment


                          #13
                          mine used to do this but started missing under load and idle would drop..
                          i changed plugs and that helped a lot!

                          also might try the MAF
                          sigpic
                          ^Back in the game^
                          BUILD THREAD: http://www.r3vlimited.com/board/showthread.php?t=201281
                          FS thread:
                          http://www.r3vlimited.com/board/showthread.php?t=214105

                          Comment


                            #14
                            Originally posted by Dj Buttchug View Post
                            un plug the black and white wire
                            oh my god yes. caused me months of pointless pain!!!

                            Comment


                              #15
                              Originally posted by spiDmang View Post
                              i just temporarily taped up the cracked areas until i can get my hoses in. but i still have a huge crack where the valve cover hose extends underneath the manifold....shits annoying!
                              If you've got cracked CCV hoses you've got vac leaks.

                              Comment

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