odd behavior

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  • 89325iturbo
    Mod Crazy
    • Mar 2004
    • 723
    #1

    odd behavior

    so ive told you guys about how my car idles up and down after running for 10-15 minutes, and will end up stalling.
    so i left the mass air meter unplugged initially by accident, but the car seems to run better. i plugged it back in, and the idle is rougher and a little lower. So i unplug it again smooths out no idling up and down no stalling.
    It just seems to defy how a car should run. How can it drive down the road seemingly running good, and good power without the mass air connected??
    You would think it would be stumbling, and not drivable when giving it gas. if its not monitoring how much air its getting how does it know how much fuel to give.
    Tags: None
    • BenM
      R3VLimited
      • Nov 2006
      • 2184
      #2
      Sounds like either the MAF is bad or it's plugged in backwards.
      Originally posted by BillBrasky
      E36's are the Stephen Baldwin of the 3 series family. They barely hold everything together and they only sold a lot because of the popularity of their older sibling.
      1991 318i Alpine II - S50/5-lug swapped - track car
      1989 325i Cirrusblau - Daily
      1970 2500 - Malaga over Grey Cloth
      2012 F350 6.7PSD

        Comment

        • 89325iturbo
          Mod Crazy
          • Mar 2004
          • 723
          #3
          That could be. But having it not plugged in would seem just as bad, and the car wouldn't run right. But it seems to run fine without it plugged in.

            Comment

            • BenM
              R3VLimited
              • Nov 2006
              • 2184
              #4
              Try flipping it around.
              Originally posted by BillBrasky
              E36's are the Stephen Baldwin of the 3 series family. They barely hold everything together and they only sold a lot because of the popularity of their older sibling.
              1991 318i Alpine II - S50/5-lug swapped - track car
              1989 325i Cirrusblau - Daily
              1970 2500 - Malaga over Grey Cloth
              2012 F350 6.7PSD

                Comment

                • 89325iturbo
                  Mod Crazy
                  • Mar 2004
                  • 723
                  #5
                  the air flow arrow is pointing in the right direction toward the TB, but ill flip it around tormorrow see if anything happens.

                    Comment

                    • ethrty
                      Grease Monkey
                      • Nov 2009
                      • 342
                      #6
                      Originally posted by 89325iturbo
                      That could be. But having it not plugged in would seem just as bad, and the car wouldn't run right. But it seems to run fine without it plugged in.
                      true but it does still have the TPS and O2 sensors to run off. when one of these three fail, the car will usually run and still be drivable, as it can be run off any combanation of these three sensors, just not 100% as efficiently, giving problems like yours

                      Originally posted by 89325iturbo
                      the air flow arrow is pointing in the right direction toward the TB, but ill flip it around tormorrow see if anything happens.
                      intalled correctly then. probably a bad one

                        Comment

                        • 89325iturbo
                          Mod Crazy
                          • Mar 2004
                          • 723
                          #7
                          Thats the thing i understand it being still drivable with 2 out of the three, but it would have issues and not run 100%. But without the mass air connected its seems to be running normally. it doesnt have an erratic idle anymore nor has stalled. seems to have good power aswell.
                          but i have nothing to compare it to cause its always had an idle issue, since i finished putting it together a couple months ago.

                            Comment

                            • 89325iturbo
                              Mod Crazy
                              • Mar 2004
                              • 723
                              #8
                              Still no clue, been driving my car without the mass air plugged in and no Ill affects.

                                Comment

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