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    Wtb afm

    Car sputters while on throttle when cold occasionally revs will drop on idle my friend who was a mechanic thinks its either my AFM or afm sensor. Could it be other problems? Note when warmed up it doesn't do that :/
    Last edited by supkev; 03-23-2012, 01:41 AM.



    #2
    I am having the same problem with my project car right now.
    Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

    garage queen 91 bmw 325is / 1972 Chevy El Camino 355 sbc 450hp

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      #3
      I'm having that same problem but I switched out afms but it's still doing the same thing I think the Tps sensor is the issue
      sigpic

      1985 528e turbo project sold
      1987 325is Hellrot _ r.i.p
      1988 Seta Alpine white _ impound
      1987 325is Delphin Gray_sold
      1987 325is Zinno _ ?sold
      1988 325is Alpine White _sold
      1991 318i Zinno Gone....

      Current:
      1988 s52 325ic Shwartz
      1968 2002 PROJECT JBRIDGE
      1992 525i/5 Glanzschwarz DailyCruiser



      BAVARIANS AND SCANDINAVIANS DON'T GET ALONG...
      NEiTHER DOES MY LEFT AND RIGHT NUT
      BUT HEY TOGETHER THEY MAKE ONE HELL OF A FUCKING TEAM:)

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        #4
        Mine cranks but wont fire and then lightly chugs and dies and back fires,several times it would take 5 minutes or so to get it to run using the throttle pedal.Once its warm no problem,holds idle and runs great.
        Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

        garage queen 91 bmw 325is / 1972 Chevy El Camino 355 sbc 450hp

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          #5
          Mine will undergo hesitation under heavy throttle at times
          sigpic

          1985 528e turbo project sold
          1987 325is Hellrot _ r.i.p
          1988 Seta Alpine white _ impound
          1987 325is Delphin Gray_sold
          1987 325is Zinno _ ?sold
          1988 325is Alpine White _sold
          1991 318i Zinno Gone....

          Current:
          1988 s52 325ic Shwartz
          1968 2002 PROJECT JBRIDGE
          1992 525i/5 Glanzschwarz DailyCruiser



          BAVARIANS AND SCANDINAVIANS DON'T GET ALONG...
          NEiTHER DOES MY LEFT AND RIGHT NUT
          BUT HEY TOGETHER THEY MAKE ONE HELL OF A FUCKING TEAM:)

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            #6
            My car never starts unless I give it gas that doesn't bother me. I can't go above 2k when its cold not like I like to rev it high or anything, I have a high diff. It sputters above 2k but once warm its all fine. My friend said it could also be crankshaft sensor?


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              #7
              Be sure to verify other electrical sensors first, as it can be something much cheaper to replace. Verify your ICV is cleaned and in working condition, it should be cleaned periodically as a stuck ICV can cause difficult starts and immediate stall. It should buzz with the ignition on but motor off.

              Also verify your TPS is sending signal to DME to control ICV. You should hear a small single click once the throttle valve is "slightly" lifted off its resting position. That is the micro switch that triggers the ECU that the car is actually at idle speed. If its misadjusted or broken, your car will never know its at a stop.

              Also, coolant temperature sensor, not sender should be checked electrically or replaced. Always good to replace this sensor if its really old.
              Owner - Bavarian Restoration
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                #8
                Originally posted by Gregs///M View Post
                Be sure to verify other electrical sensors first, as it can be something much cheaper to replace. Verify your ICV is cleaned and in working condition, it should be cleaned periodically as a stuck ICV can cause difficult starts and immediate stall. It should buzz with the ignition on but motor off.

                Also verify your TPS is sending signal to DME to control ICV. You should hear a small single click once the throttle valve is "slightly" lifted off its resting position. That is the micro switch that triggers the ECU that the car is actually at idle speed. If its misadjusted or broken, your car will never know its at a stop.

                Also, coolant temperature sensor, not sender should be checked electrically or replaced. Always good to replace this sensor if its really old.
                thanks I will check these out in the mean time I'm still interested in a AFM.


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                  #9
                  anyone have a working AFM laying around?


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                    #10
                    check cps and injector harness plug.

                    i DO need an AFM though.
                    1989 325is - 2000 323it - 1990 M3 - 1973 2002 - 1975 CB550F

                    Troll my Instagram feed: m.carey

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                      #11
                      i have an afm for sale, its from a 87 325is. $40
                      -Jason
                      91 Lagunengrun 325i
                      84 Kawasaki GPZ550

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                        #12
                        Originally posted by JFarhanbod View Post
                        i have an afm for sale, its from a 87 325is. $40
                        never got that pm back buddy :loco:

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                          #13
                          I got one for sale, it's yours if you buy me a chipotle burrito and a drink.
                          @IRON-E30 aka Edwin:D

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                            #14
                            Originally posted by IRON-E View Post
                            I got one for sale, it's yours if you buy me a chipotle burrito and a drink.
                            dibs? i'll take you on a date anytime gordo <3
                            1989 325is - 2000 323it - 1990 M3 - 1973 2002 - 1975 CB550F

                            Troll my Instagram feed: m.carey

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                              #15
                              I have a spare afm as well. I have found that the car will start and idle perfect with out any afm connected. Try to start your car without it. If it starts and runs better with out it then with it you know yours is bad. Alot of the symptoms can be caused by a bad ecu. Sometime the harness will wick up moisture and corrode the ecu.
                              Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

                              www.gecoils.com
                              My euro 316 project Transaction Feedback

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