2002 BMW 330 air noise. Hissing.

Tiny
INDYRV6
  • MEMBER
  • 2002 BMW 330
  • 6 CYL
  • 2WD
  • MANUAL
  • 31,000 MILES
Car runs and operates fine. When you start it, you hear what appears to be air excaping from under the steering wheel. Out of the steering column. If you turn the wheel 1/4 turn, you can make it louder. Or make it go quiet. There are no leaks to be found. It could be from the power steering pump.

There is also a grinding noise that can come from the same area which I understand may be a bearing needing lubrication. But that is an occasional sound. The air noise is there all the time and varies in intensity as you turn the wheel. It is most noticeable when stopped and you turn the wheel to the right.

RS
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Monday, May 17th, 2010 AT 12:51 PM

3 Replies

Tiny
DR. HAGERTY
  • MEMBER
There are no leaks to be found? You didn't look! There is a vacuum hose that touches the steering column. I have repaired lots of them. The other noise could be the clockspring in the steering wheel, for the airbag wires, they get noisy.
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Tuesday, May 18th, 2010 AT 9:51 AM
Tiny
INDYRV6
  • MEMBER
Dr. Hagerty. Thanks for the response. Haven't torn it apart yet. I wanted to know what I was looking for first. I have the Haynes Repair Manual and plenty of time. It sounds like air. But there was nothing in the manual pointing to a vacuum line. And nothing to be found on a clockspring.

What is that vacuum line attached to? Why would the air noise stop when you turn the wheel 1/4 turn?

Is there one manual for this car that is better than all others? We plan on keeping it forever.

RS
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Tuesday, May 18th, 2010 AT 11:11 AM
Tiny
DR. HAGERTY
  • MEMBER
The line is connected to the intake manifold. The clock spring is in the steering column.
http://www.2carpros.com/articles/mitchell1eautorepair-car-repair-manuals
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Tuesday, May 18th, 2010 AT 8:56 PM

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