Skip the auto shop - Our mechanics make house calls

Q: Car turns off at stops

asked by on

My car is turning off when stops are made.

A: Stalling usually indicates that the engine ...

Stalling usually indicates that the engine is not getting enough fuel, or that it is getting too much air. If this happens mostly at idle, I would suspect a vacuum leak, idle air control valve, or problems with the VANOS system. Cars such as yours are known for having problems with the VANOS system, which is BMW's version of "variable valve timing."

Inside the adjustment mechanism, there is a set of seals that hold oil pressure, enabling the camshaft to change position. From the factory, these seals are made of an inferior material that does not stand up well to oil saturation and temperature fluctuation. When the seals begin to fail, the VANOS system is unable to operate properly and can lead to symptoms like the ones you are having. I suggest having a professional, such as one form YourMechanic, diagnose your vehicle's stalling issue firsthand. After diagnosis, they will also be able to perform the necessary repairs to have this issue fixed.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Transmission is hard to change over after overheating due to a ruptured radiator hose.

There are 2 unrelated issues going on here. The poor idling may well reflect a blown headgasket from the overheating event you mention. This would show up as rough idling and spark plug firing issues/codes. The harsh shifting can be...

Q: Old BMW's fuel pump powered with 12 volts is clogged

Unfortunately, there isn't. Those things are electronic and if the brushes finally wear out, it's time for a new pump. The way you test it is--you get the inlet to the pump and put a little hose on it and...

Q: Rough engine noise on startup, idle and low rpms

Hello. From what you describe it would appear that your low oil level may have something to do with the engine noise. First off, if the oil is low I would top it off as soon as possible, as low...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...