Idle problems...

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  • Vefu
    Member
    • May 2011
    • 57
    #1

    Idle problems...

    Car has been idling funny once it gets warmed up, and I have NO idea how to fix it. Any suggestions?

    One of my vacuum hoses does have about a 1 inch split in it and I ordered that today, so if that doesn't fix the problem then is there anything else specific to idle problems only when a car is warm?

    Here is a video I took of the car idling.

    http://www.youtube.com/watch?v=QwDmLVYh92E
    Tags: None
    • Vefu
      Member
      • May 2011
      • 57
      #2
      Bump for help.

        Comment

        • green
          Advanced Member
          • Dec 2010
          • 128
          #3
          Coolant temp. sensor? Cold start valves are also goofy, at least that's what I've found.

            Comment

            • Mr. Tasty
              No R3VLimiter
              • Jul 2011
              • 3421
              #4
              Originally posted by Vefu
              Car has been idling funny once it gets warmed up, and I have NO idea how to fix it. Any suggestions?

              One of my vacuum hoses does have about a 1 inch split in it and I ordered that today, so if that doesn't fix the problem then is there anything else specific to idle problems only when a car is warm?

              Here is a video I took of the car idling.

              http://www.youtube.com/watch?v=QwDmLVYh92E
              these cars don't like vacuum leaks.
              2014 Alpine White 335i MSport
              (Daily Driver)
              Full Mperformance Aero

              2007 Black Sapphire Metallic E92 335i (6MT)
              KW V2 Coilovers
              VRSF Catless Downpipes

                Comment

                • Vefu
                  Member
                  • May 2011
                  • 57
                  #5
                  Originally posted by green
                  Coolant temp. sensor? Cold start valves are also goofy, at least that's what I've found.
                  The problem only happens when the car is warm though. So wouldn't that not effect it?

                  Originally posted by green
                  these cars don't like vacuum leaks.
                  What other hoses should I check that are common for leaks? I'm replacing the hose that runs from the intake boot to the ICV.

                    Comment

                    • green
                      Advanced Member
                      • Dec 2010
                      • 128
                      #6
                      If the cold start valve is not getting the signal to shut off it may still be spraying fuel in there causing it to flood. Don't know if that's what it is, but you never know.

                        Comment

                        • kalib0y
                          No R3VLimiter
                          • Dec 2004
                          • 3620
                          #7
                          you can also try cleaning your Idle control valve but fixing that hose should solve your problem
                          95 7.1L 16V E36 M3
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                            Comment

                            • CarsSuck
                              E30 Modder
                              • Oct 2005
                              • 968
                              #8
                              If its only when warm, then I would suspect the oxygen sensor first. If it has more than about 50,000 mi on it, I would just replace it.

                              Also, have you tested the throttle pos. sensor to make sure it is switching properly?
                              --Will

                                Comment

                                • Vefu
                                  Member
                                  • May 2011
                                  • 57
                                  #9
                                  The oxygen sensor only has about 30k miles on it, so I assume that isn't the problem. Where is the throttle position sensor located so I can test that?

                                    Comment

                                    • CarsSuck
                                      E30 Modder
                                      • Oct 2005
                                      • 968
                                      #10
                                      the tps is on the bottom side of the throttle body. do you have a bently manual? it has the proper testing procedure.
                                      --Will

                                        Comment

                                        • harold30
                                          Advanced Member
                                          • Jul 2011
                                          • 180
                                          #11
                                          Here's an article specific to your problem: http://www.verrill.com/car/idle/e30_idleproblem.shtml

                                            Comment

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