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Car Forum / BMW Cars / February 2006BMW Keeps Stalling
Hi All, Do you know why my 323i SE 1999, keeps stalling. It's very wired what happens, in the morning when the car is cold, the car seems to idle ok, but as it warms up, it will now and again stall or just cut out as im about to stop the car with my foot on the cluch. I did have the idling valve changed but this was not the problem. Do any of you experts have any idea of what the problem might be. Many thanks in advance Andrew I believe this was one of the symptoms when my 540i had a failing crank sensor or cam position sensor. >Hi All, >Do you know why my 323i SE 1999, keeps stalling. It's very wired what [quoted text clipped - 5 lines] >Many thanks in advance >Andrew > I believe this was one of the symptoms when my 540i had a failing > crank sensor or cam position sensor. Yup - the crank position sensor on my E39 did this when it got hot. But threw up the appropriate code.  Signature*Sometimes I wake up grumpy; Other times I let him sleep. Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. > Hi All, > Do you know why my 323i SE 1999, keeps stalling. It's very wired what [quoted text clipped - 5 lines] > Many thanks in advance > Andrew Definetely sounds like the Crankshaft/Cam position Sensor cos I had the same problem which left me thinking the engine was about to die permanently. Very worrying though and the worst part is, it is a very very very very very common problem on some beemers. I think in the USA it was actually a recall item due to it's relation to emission standards or something, so it was replaced free. In the UK I don't know if it is a recall item or not, if it is a recall item.. I'll go kick seven seas out of my stealer..oops dealer.cos the dealer charges alot for the job, if u can get a good independent then consider it., >>Hi All, >>Do you know why my 323i SE 1999, keeps stalling. It's very wired what [quoted text clipped - 15 lines] > seven seas out of my stealer..oops dealer.cos the dealer charges alot > for the job, if u can get a good independent then consider it., Chris, I have 97 Z3; was experiencing the same issues. Was instructed by my father, a retired auto mechanic to put 2 or 3 drops of 3-in-1 oil on the key. I was skeptical to say the least. After doing so, my car stalling issue has not occured anymore. I am astonished, but it worked! Best, jb > I have 97 Z3; was experiencing the same issues. Was instructed by my > father, a retired auto mechanic to put 2 or 3 drops of 3-in-1 oil on > the key. No proper mechanic uses 3-in-1 oil for anything. Even a squeaky garden gate. Signature*It's o.k. to laugh during sexŒ.Œ.just don't point! Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. >> I have 97 Z3; was experiencing the same issues. Was instructed by my >> father, a retired auto mechanic to put 2 or 3 drops of 3-in-1 oil on >> the key. > >No proper mechanic uses 3-in-1 oil for anything. Even a squeaky garden >gate. But I do use 3-in-1 or its generic equivalent on the oilstone that I use to sharpen my plane blades and wood chisels. :-) SignatureDan. > But I do use 3-in-1 or its generic equivalent on the oilstone that I > use to sharpen my plane blades and wood chisels. [sucks teeth] Water. ;-) Signature*Never underestimate the power of stupid people in large groups Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. >> But I do use 3-in-1 or its generic equivalent on the oilstone that I >> use to sharpen my plane blades and wood chisels. > >[sucks teeth] Water. ;-) Nah. It takes too long to get the stone wet each time. I also grind plane blades close enough to 25° by eye, and I do a really mean 120 grit job on kitchen knives. Carbon steel ones, of course. There are no stainless steel knives in *my* kitchen. Hell, it was only a few years ago that I finally accepted the synchromesh gearbox. SignatureDan. >>But I do use 3-in-1 or its generic equivalent on the oilstone that I >>use to sharpen my plane blades and wood chisels. > > [sucks teeth] Water. ;-) Not on an oilstone. A whetstone perhaps... Signature-Fred W Dave you are a thorn in alot of peoples side. >> I have 97 Z3; was experiencing the same issues. Was instructed by my >> father, a retired auto mechanic to put 2 or 3 drops of 3-in-1 oil on >> the key. > > No proper mechanic uses 3-in-1 oil for anything. Even a squeaky garden > gate. > Dave you are a thorn in alot of peoples side. Well, you don't oil a key. The oil gets into the tumblers and in combination with dirt causes them to stick. The correct lubricant for a key is graphite. If you haven't got the powdered type use a pencil. But 3 in 1 oil isn't the correct *oil* for anything. Perhaps the easiest source of a good light machine oil is sewing machine oil. > >> I have 97 Z3; was experiencing the same issues. Was instructed by my > >> father, a retired auto mechanic to put 2 or 3 drops of 3-in-1 oil on > >> the key. > > > > No proper mechanic uses 3-in-1 oil for anything. Even a squeaky garden > > gate. Signature*A closed mouth gathers no feet. Dave Plowman dave@davenoise.co.uk London SW To e-mail, change noise into sound. > Dave you are a thorn in alot of peoples side. Well, perhaps he is, but in this instance Dave is correct. You do not want any oil in the tumblers of a lock. It will only make matters worse in the long run. You can use a cleaner spray to get the oil out and then a dry lubricant such as graphite powder or such. But in any case, lubricating the lock will have absolutely nothing to do with the OPs problem... Signature-Fred W I can see how that would work, It creates a contact that the ignition can recognize. But of course I have read your replies from the BMW iliterate, who have to beak off !! I am finding that all the "BMW Dicks" have all the answers and have to say something to something they have no knowledge of. BmwM1 >>>Hi All, >>>Do you know why my 323i SE 1999, keeps stalling. It's very wired what [quoted text clipped - 30 lines] > > jb no one has mentioned the oxygen sensor(s) on this issue. w/o it the computer keeps dumping to much fuel, sometimes they become lazy. you can test it yourself w/ a DMM -- rusvd > Hi All, > Do you know why my 323i SE 1999, keeps stalling. It's very wired what [quoted text clipped - 5 lines] > Many thanks in advance > Andrew At the risk of being classified one of the BMW "dicks" ... Here is my take on your problem based on the limited information you presented. When the engine first starts, the O2 sensors are not warmed up yet, so the ECU runs the fuel injection in what is known as "open loop" mode. That is, it determines, based on the air and engine temperature settings an appropriate amount of fuel to be injected (quite rich), but has no means to evaluate whether the mixture is right or not. This is when your car is running well. After about 5 minutes or so the ECU decides that the O2 sensor has had long enough to warm up and switches into "closed loop" mode. The only difference is that now the ECU looks at the feedback from the O2 sensor and adjusts the fuel mixture for proper stoichiometric combustion. However, if the O2 sensor is old and tired or otherwise faulty it may actually set the mixture improperly, resulting in the rough idling condition you are experiencing. When it gets bad enough it may exhibit and store a check engine code that the fuel mixture is "out of range" or something similar. To see if this is what is happening requires using an alternate exhaust gas analyzer. However, if the car has more about 100k miles (or more) on it, you may want to just put in a new sensor (or sensors) and see what happens. The "standard" replacement interval for O2 sensors is about 100k miles. So I guess the next question would be; does this really happen just "as the engine warms up" as you said previously (supporting my theory) or is it only when the engine gets hot (supporting the crankshaft postion sensor theory)? Signature-Fred W |
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