08-01-2011, 01:01 PM | #23 | |
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08-01-2011, 04:30 PM | #24 | |
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If you release the brake the vehicle takes off much faster than the normal "creep" speed that one expects when the engine is idling properly at 600 rpm. I would hate to have to get out of a tight parking space with the engine pulsing from 600 to 1600 rpm every second or so, totally out of my control. Also, dropping it into gear with the engine hitting 1500-1600 rpm puts a very high shock load on the transmission and the rest of the driveline and certainly is not doing the vehicle any good. Mine continues to often do it for 20 seconds after starting without the A/C compressor running and always when the A/C is on. |
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08-01-2011, 04:45 PM | #25 | |
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I'm assuming your solution is to just wait a min or so every time you start up? After this have you ever experienced this while in traffic? |
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08-02-2011, 02:10 AM | #26 | |
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Yep, it always does the throttle blipping dance if the A/C is on. I always wait for at least 30 seconds after a cold start before putting the car in gear as a matter of principle, and have developed the habit of switching off the A/C whenever I stop the car. This usually prevents the embarrassing, sophomoric engine revving at startup. I just hit the A/C button after driving off. I've never had this happen in traffic or after the engine has been running for more than 60 seconds. |
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08-02-2011, 10:17 AM | #27 | |
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08-11-2011, 05:20 PM | #28 |
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I think is might be the first 28i to display this problem.
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08-11-2011, 06:40 PM | #29 |
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I've never had it come back after intially starting the car either. If there's no easy fix or if BMW does admit to there being a problem I think it's just something we all have to live with.
Even if the rpm jumps around when not pushing the gas pedal it's good habit for people to always have their foot above their brake pedal when it's not on the accelerator. |
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08-15-2011, 12:45 PM | #32 |
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It's happening severely rapidly on my X3 whenever I start it and press "MAX" on the A/C. I will record this and post it for you guys to see. I'm bringing in the car again, I think. I'm at wit's end here.
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08-15-2011, 01:50 PM | #33 | |
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Although it's annoying, this "idle speed hunting" seems to happen on many, if not most, X3's so seems to be part of the car's "character". It should stabilize within 20 to 30 seconds. If yours is continuing for longer than that, you may have a problem, but if not, it seems to be pretty par for the X3 and is something the dealer probably won't be too concerned about. It sounds like the engine idle speed regulating software is overcompensating for the alternator and A/C compressor loading at cold start-up and has some significant delay. This might be something that a factory software update might fix, but I wouldn't hold my breath waiting for BMW to get around to it. |
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08-15-2011, 03:49 PM | #34 |
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Be that as it may, it's not normal on all cars, and it didnt happen this rapidly ever on my first X3. I don't want to be in a parking space and have that happen (600-1500-600 every second) and have to pay for someones bumper because my car doesn't know how to regulate engine speed properly at start up. N-O. I've already had one, no, two faulty X3s in the past year and I'm not going to accept this kind of irresponsible engineering anymore. Either they fix it now, or they send me a check for $57,350. I'm finished.
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08-15-2011, 03:58 PM | #35 | |
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08-15-2011, 04:01 PM | #36 |
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And another thing.
What if you valet your car and the attendant experiences this upon returning with your car? What if he bumps into the car in front or behind him, or a post? If valets are not responsible for any loss or damage to the vehicle or items left inside, then you're out a few thousand dollars to replace your bumper. I don't know about you, but that doesn't sound just "annoying" to me. |
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08-15-2011, 04:15 PM | #37 |
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Yes, you are, of course, right.
It's too easy to just "go along with it" because the dealer says "They all do - don't worry". I promise to complain about it (again) the next time I'm at my dealership. Seriously, maybe we should collaborate on a form letter to post here that everyone on the forum with the problem can copy, print and send to BMW NA. Maybe if they get a few dozen copies from disgruntled customers they'll give it some attention. Judd, Please do keep us posted as to what your dealer's response is. |
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08-15-2011, 04:44 PM | #39 | |
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Once the engine has been running for a minute or so, the idle speed is absolutely steady and smooth at 600 rpm (indicated). |
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08-15-2011, 04:48 PM | #40 |
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Mine has always done it since the beginning. I think it has been doing it less as of recent though. I only have 940 miles on this one so far.
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08-15-2011, 04:52 PM | #41 | |
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Apologies to any members of the bar who frequent this forum, but I subscribe to Wm. Shakespeare's line from Henry the Sixth, Pt. 2 Act 4, Scene 2. |
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08-15-2011, 07:20 PM | #43 |
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08-15-2011, 07:22 PM | #44 |
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