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    m42 will only start when moving?

    ok jordan, u win

    i was getting off the free way and the car started to sputter then it just died and wouldnt start at all. I thought mayeb the gas gauge was broken but i added gas and still the same thing. after i let it sit for a while it started for a few seconds then quit. when it was being towed it would start and run as long as i kept the rpms up then when we got to the house it idled for a bit then quit. what could this be because of?

    i might just have to get an s52

    #2
    Re: m42 will only start when moving?

    Originally posted by nickmpower
    ok jordan, u win
    Haha nice.

    Originally posted by nickmpower
    what could this be because of?
    It's because its a part car, it is trying to tell you something. lol. I'm not even kidding anymore... that car is a nightmare.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

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      #3
      Get an S50, OBD-II is a bitch.

      "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

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        #4
        now that i think back a few times i have done a jerky shift or something and the car has sputtered liek this i would just like weave back and forth and the problem would stop i dont know if its related.

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          #5
          Yeah, that's a surefire symptom of a parts car related problem.

          "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

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            #6
            is there any way i can tell if the engine is getting fuel with out haveing to take the manifold off? ive done that about 10 times to many already.

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              #7
              Pull the fuel line off the fuel rail and hold a lit match to it. Turn the key to the "Start" position and hold for several seconds.

              EDIT: I do not assume responsibility for any of nickmpower's actions.

              "See, we're adding a little something to this month's sales contest. As you all know, first prize is a Cadillac Eldorado. Anyone wanna see second prize? Second prize is a set of steak knives. Third prize is you're fired."

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                #8
                please, no one do that.


                matt- you're giving people too much credit for common sense
                BEERTECH

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                  #9
                  I just blew up my car! then the garage collasped on the rest of the cars!!!

                  yeah i should have known about that considering i connected it when i put it together

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                    #10
                    You could be running really lean, and getting unmetered air. I had that problem when I replaced the rubber intake elbow from the AFM to the manifold. There was a plug that I forgot to transfer to the new elbow.

                    Check your intake lines and breather connections, it could be one of many possible culprits.
                    Brian
                    Used BMW Parts!!

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                      #11
                      ok so ive figured out that its the fuel pump wiring, is there anything i should check? Im thinking that maybe i could run a wire from the sensor that is right there and connect that to the fuel pump but i thought maybe the wire for that wouldnt be enough to power both items?

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                        #12
                        anyone know if it will burn up the wire?

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                          #13
                          yeah I was going to suggest the fuel pump! what makes you think it's the wiring, and not a bad fuel pump?

                          anyway, check for shorts of course. you can use any decent multimeter to see if a wire is grounding. I paid about $80 for mine, you can probably borrow one from somebody though. it could also just be a bad connection.. either way the fuel pump is super easy to get to, so you can start by looking at it and checking to see if it's working or not. :P

                          you probably wouldn't burn up the wire as long as it's the same gauge or larger. assuming you aren't connecting it to the wrong thing anyway :P
                          Build thread

                          Bimmerlabs

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                            #14
                            after taking out the fuel pump, it testing good, putting it back in, taking out all the alarm shit, and still not working, i finally figured out it was some small wire that hooks on to the battery

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