car isn't starting... trouble shooting

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  • eMastered
    Noobie
    • Jun 2011
    • 7
    #1

    car isn't starting... trouble shooting

    After driving my car for about 10 minutes, i run inside to grab some things from the house.
    I get back into my car, start it and it starts.. then suddenly dies
    I tried several more times, every time dieing sooner. To me, it sounds like a bad fuel line or fuel pump, but that is coming from my mustang family and I, and BMW's are always different.

    I left the car for a few hours, then just tried to start it again a bit ago... and it won't even start now. The motor still turns over, but its not getting gas or something?

    let me know what you guys think asap... thanks
    Tags: None
    • e30loverSC
      E30 Addict
      • Jun 2009
      • 575
      #2
      Well I had this same problem and whatever happened killed power to my fuel system and aux fan. I replaced fuel pump and all first then did some more electrical testing and found out it was a blown fusible link on the positive battery cable in the trunk... on the small wire. Pain in the ass..

        Comment

        • e30loverSC
          E30 Addict
          • Jun 2009
          • 575
          #3
          I would test to see if your fuses and relays are getting power. If not thats your problem. If they are try switching relays... if that doesnt fix it then try fuel pump.

            Comment

            • selturk
              E30 Enthusiast
              • Dec 2008
              • 1197
              #4
              yea check your main and fuel pump relays. It could also be your CPS (check for spark).

                Comment

                • eMastered
                  Noobie
                  • Jun 2011
                  • 7
                  #5
                  okay, thanks for the quick replies.. I'll check all of that in the morning.
                  Thanks again

                    Comment

                    • jlevie
                      R3V OG
                      • Nov 2006
                      • 13530
                      #6
                      My first suspicion would be the fuel system if spark is present when cranking the engine.
                      The car makes it possible, but the driver makes it happen.
                      Jim Levie, Huntsville, AL

                        Comment

                        • eMastered
                          Noobie
                          • Jun 2011
                          • 7
                          #7
                          Originally posted by e30loverSC
                          Well I had this same problem and whatever happened killed power to my fuel system and aux fan. I replaced fuel pump and all first then did some more electrical testing and found out it was a blown fusible link on the positive battery cable in the trunk... on the small wire. Pain in the ass..
                          Originally posted by selturk
                          yea check your main and fuel pump relays. It could also be your CPS (check for spark).
                          Originally posted by jlevie
                          My first suspicion would be the fuel system if spark is present when cranking the engine.
                          I checked the owners manual, and couldn't find a fuse for the fuel pump? So I'm guessing its a relay for the fuel pump. Looked around online for the location of it, and think i found the right one but i'm not sure. and the fuses were not the issue.

                          my next guess would be the fuel pump itself?
                          what do you think? should i jump the gun and drop the 200$ for a new one? and if so where from.

                            Comment

                            • b*saint
                              No R3VLimiter
                              • May 2006
                              • 3794
                              #8
                              check ground.
                              Ma che cazzo state dicendo? :|

                                Comment

                                • eMastered
                                  Noobie
                                  • Jun 2011
                                  • 7
                                  #9
                                  Originally posted by b*saint
                                  check ground.
                                  ground from what to where? the fuel pumps ground? or relays?

                                    Comment

                                    • selturk
                                      E30 Enthusiast
                                      • Dec 2008
                                      • 1197
                                      #10
                                      Take a look at here:

                                      http://blog.bavauto.com/bmw-e46/bmw-e30-stalling-and-no-start

                                        Comment

                                        • b*saint
                                          No R3VLimiter
                                          • May 2006
                                          • 3794
                                          #11
                                          Originally posted by eMastered
                                          ground from what to where? the fuel pumps ground? or relays?
                                          Your main ground.
                                          Ma che cazzo state dicendo? :|

                                            Comment

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