Car turning off while goin down the road.

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  • ashton
    Wrencher
    • Jan 2011
    • 240
    #1

    Car turning off while goin down the road.

    I just rebuilt my 88 325i from the head up and it has a check engine light code for afm. I was wondering if this could be the reason for the car shuttin off as it goes down the road? I need a new afm and would like a new ecu. So if you can help me out I would greatly appreciate it. Thanks.

    Ashton.
    Tags: None
    • Kershaw
      R3V OG
      • Feb 2010
      • 11822
      #2
      how loud is your fuel pump?

      double check your afm with known good afm. swap airboxes from a friends e30.
      AWD > RWD

        Comment

        • ashton
          Wrencher
          • Jan 2011
          • 240
          #3
          My fuel pump is loud. Is that bad?

            Comment

            • ashton
              Wrencher
              • Jan 2011
              • 240
              #4
              Originally posted by Kershaw
              how loud is your fuel pump?

              double check your afm with known good afm. swap airboxes from a friends e30.
              My fuel pump is loud. Is that bad?

                Comment

                • jlevie
                  R3V OG
                  • Nov 2006
                  • 13530
                  #5
                  Originally posted by ashton
                  My fuel pump is loud. Is that bad?
                  A loud pump is one that is having to work too hard or one that is dying.
                  The car makes it possible, but the driver makes it happen.
                  Jim Levie, Huntsville, AL

                    Comment

                    • mattdk318i
                      No R3VLimiter
                      • Jun 2006
                      • 3953
                      #6
                      Crank positioning sensors will do this all day long. Is it cleanly shutting off? or is it stumbling before shutting off?
                      sigpic

                        Comment

                        • ashton
                          Wrencher
                          • Jan 2011
                          • 240
                          #7
                          Originally posted by mattdk318i
                          Crank positioning sensors will do this all day long. Is it cleanly shutting off? or is it stumbling before shutting off?
                          Its cleanly shutting off.

                            Comment

                            • Kershaw
                              R3V OG
                              • Feb 2010
                              • 11822
                              #8
                              i'd replace the pump. its $150 new on amazon and its something that you'd want to replace anyway if you are planning on keeping the car for awhile.
                              AWD > RWD

                                Comment

                                • KillaCam
                                  R3VLimited
                                  • Jun 2009
                                  • 2103
                                  #9
                                  its the crank sensor. 20 bux will fix that
                                  Originally posted by E30_(1st Musk)_
                                  HONDA IS WHERE EVERY TREND DIES! .

                                  24v swap Oil Pan..F/S

                                    Comment

                                    • jlevie
                                      R3V OG
                                      • Nov 2006
                                      • 13530
                                      #10
                                      A bad CPS is an obvious suspect. But there are other possibilities. Start with the a new CPS and see what happens.
                                      The car makes it possible, but the driver makes it happen.
                                      Jim Levie, Huntsville, AL

                                        Comment

                                        • StereoInstaller1
                                          GAS
                                          • Jul 2004
                                          • 22679
                                          #11
                                          I would FIRST bypass the main relay, it is easily the most common failure for what you are describing.

                                          Your fuel pump being noisy means it has more draw, that means your main relay is working even harder.

                                          Closing SOON!
                                          "LAST CHANCE FOR G.A.S." DEAL IS ON NOW

                                          Luke AT germanaudiospecialties DOT com or text 425-761-6450, or for quickest answers, call me at the shop 360-669-0398

                                          Thanks for 10 years of fun!

                                            Comment

                                            • ashton
                                              Wrencher
                                              • Jan 2011
                                              • 240
                                              #12
                                              Originally posted by KillaCam
                                              its the crank sensor. 20 bux will fix that
                                              What do I get for $20? Lol

                                                Comment

                                                • ashton
                                                  Wrencher
                                                  • Jan 2011
                                                  • 240
                                                  #13
                                                  Originally posted by StereoInstaller1
                                                  I would FIRST bypass the main relay, it is easily the most common failure for what you are describing.

                                                  Your fuel pump being noisy means it has more draw, that means your main relay is working even harder.
                                                  How do you bypass the main relay? Im a noob.

                                                    Comment

                                                    • Manzaa
                                                      Member
                                                      • Dec 2010
                                                      • 82
                                                      #14
                                                      U know I had a very similar problem! It turns out it was the battery. It was over two yr old , and wasn't holding charge , and the clamps were loose. It never hurts to check

                                                        Comment

                                                        • Kershaw
                                                          R3V OG
                                                          • Feb 2010
                                                          • 11822
                                                          #15
                                                          Originally posted by ashton
                                                          What do I get for $20? Lol
                                                          you rebuilt the engine, but you dont know what a cps is or how to bypass a relay?
                                                          AWD > RWD

                                                            Comment

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