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Author Topic: 1999 323i BIG PROBLEM  (Read 1375 times)
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Edson
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« on: Wednesday, November 24, 2004 - 11:09 PM »

Im having a potentially BIG problem with my 4dr 199 323i. It's happened a few times already and I know I need to get it checked, and I am in a week or so but I was hoping to get a bit of an advance from some of you BMW experts..

It's having a problem where I turn on the car, drive off, but a few minutes later the light that has a triangle with an exclamation point inside of it and has a circle around it comes on (I think it's the ASC light, but I could be wrong) then a minute later the ENGINE light comes on, then the EML light comes on and the car loses it's power. The engine starts working at about 10%, it wont go past 25MPH. When I turn off the car and turn it back on, it's back to normal except the ENGINE light stays on for a day or two.
 It's weird because I've noticed that if when I turn the car on in the morning and let it warm up (for 10 minutes or so) and drive off, it's ok. But If I dont let it warm up long enough it does that everytime. I am sure that is not normal so I was hoping someone can give me an idea of what could be wrong. I am going to take it in but I would like to get an idea of what to expect.

Thanks


EDSON
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« on: Wednesday, November 24, 2004 - 11:09 PM »

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DeanP
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« Reply #1 on: Wednesday, November 24, 2004 - 11:12 PM »

Do you have an owners manual to tell you for sure what the first light means?  The one with the triangle and circle.
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« Reply #1 on: Wednesday, November 24, 2004 - 11:12 PM »

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Edson
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« Reply #2 on: Thursday, November 25, 2004 - 06:24 PM »

No I don't havd the owners manual. It's a circle with a triangle in the middle, and inside the triangle is an exclamation mark. From what I understand, it is the ASC light.
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zazo
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« Reply #3 on: Friday, November 26, 2004 - 06:17 AM »

You are very close.  That first light is the DSC, dynamic stability control.  It usually flashes on and off whenever you drive aggressively (hmmm, can't imagine how I'd know that Wink) and the DSC system kicks in and causes the engine power to get electronically modulated so as not to break the back tires free.  There is a little button on the center console in my car, just in front and to the left of the shifter with the same acronym printed on it.  Pressing this button causes that light to get illuminated permanently and switches the DSC system off allowing you to smoke those expensive rear tires of yours!

Right now, my car is experiencing a similar problem, of sorts.  When starting the car cold, it works like a champ.  However, stopping and restarting the engine once it's warm causes something strange to happen to the throttle by wire/engine management software.  After restarting, every time I let the clutch out in first gear while at a full stop, the engine RPM's drop 5-600 RPM often stalling the engine.  Then it jumps up and accellerates somewhat normally.  I say somewhat, because it feels like it's about 60% of what I'm used to.

My check engine light came on about 2 weeks ago and has stayed on - pretty much coinciding with when this problem started happening.  So I sent away for a Peake R5 fc something or other engine analyzer.  Just got it yesterday, so I will post my results shortly once I get my hands dirty.

I'll also write up a review of this device and let you all know how it works.
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Ilir
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« Reply #4 on: Friday, November 26, 2004 - 09:17 AM »

You are very close.  That first light is the DSC, dynamic stability control.  It usually flashes on and off whenever you drive aggressively (hmmm, can't imagine how I'd know that Wink) and the DSC system kicks in and causes the engine power to get electronically modulated so as not to break the back tires free.  There is a little button on the center console in my car, just in front and to the left of the shifter with the same acronym printed on it.  Pressing this button causes that light to get illuminated permanently and switches the DSC system off allowing you to smoke those expensive rear tires of yours!

Right now, my car is experiencing a similar problem, of sorts.  When starting the car cold, it works like a champ.  However, stopping and restarting the engine once it's warm causes something strange to happen to the throttle by wire/engine management software.  After restarting, every time I let the clutch out in first gear while at a full stop, the engine RPM's drop 5-600 RPM often stalling the engine.  Then it jumps up and accellerates somewhat normally.  I say somewhat, because it feels like it's about 60% of what I'm used to.

My check engine light came on about 2 weeks ago and has stayed on - pretty much coinciding with when this problem started happening.  So I sent away for a Peake R5 fc something or other engine analyzer.  Just got it yesterday, so I will post my results shortly once I get my hands dirty.

I'll also write up a review of this device and let you all know how it works.

Cool, am interested in what causes the problem exactly....
Hope you guys can get it fixed, drinving at 60% isn't what you've bought the car for
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Ilir Dibrani
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zazo
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« Reply #5 on: Friday, November 26, 2004 - 09:59 AM »

Well, preliminarily, the Peake code/reset tool gets a thumbs up.  I will write up a more formal evaluation later and post it to the lounge/paddock area since there isn't specifically a tool review section.

One thing I forgot to mention right off, the very first thing you should check if you are having any kind of electronics problems is your battery.  All of the electronics in our cars are extremely sensitive to the slightest fluctuations in battery power, and could easily be sent into chaos when the battery power gets low.  Quick way to check, if your battery has a little round sight glass on the top is to look in there and make sure it is green.  Black means undercharged, and yellow means you gotta change the battery.

The best test, of course, is to put the leads of a multimeter/voltmeter across the poles of the battery and check voltage (engine off!).  Standing voltage should be 12.6 or higher.  Anything less is not gonna be good for your sensitive electronic components.
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zazo
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« Reply #6 on: Friday, December 03, 2004 - 06:01 AM »

My bad, Edson!  There is such a thing as ASC.  It stands for automatic stability control, which later became dynamic stability control.

It's been a while now, so I'm hoping you got some resolution to your problems.  Please post up your results when you get a chance.
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