1976 BMW 2002 WHISTLING NOISE

[ramayah]

After running for a few miles I will hear a kind if high pitched whistling noise coming from the right side. More like a very fine squealing or whining sound. My mechanic inpspected underneath to see if anything is grazing or rubbing but found nothing. I hear it only when the car is warm and I am traveling above 25 mph.

Thanks for your help in determining its cause.

Randy

[RayC911]

I was going to say loose trim or gap in hood. But only when warm is throwing me off....

[rey949]

Souds like a leaky window gasket

[Scott Sislane]

I was going to say loose trim or gap in hood. But only when warm is throwing me off....

sounds like trim whistle, ya.

[Kpeters]

Or maybe you have an aftermarket windshield seal?

But again if only when warm I've no idea! Some sort of intake leak vacuum leak?

[adawil2002]

Check hood trim, if there is a small gap it'll whistle.

Wheel bearings, when was the last time they were greased and torqued?

Brakes, caliper or cylinder could be hanging up a little on warped rotors or drums.

Alternator bushings need to be replaced, belt too old, too loose.

[mcaden]

There is a reason they call it the whistling bomb! As others have said... its likely your trim and you will need to investigate where.

Good luck.

-Marc

[bmwjer]

I had this whistling problem on my very first of dozens of Beemers. My 74' 2002 had a whistling up front that drove me crazy. I started taping off parts of the trim and anywhere else. It was the front trim around the front hood!

Jerry

76' 2002

85' 323i Baur

[bmwjer]

I had this whistling problem on my very first of dozens of Beemers. My 74' 2002 had a whistling up front that drove me crazy. I started taping off parts of the trim and anywhere else. It was the front trim around the front hood!

Jerry

76' 2002

85' 323i Baur

[ramayah]

I will check the trim.

I don't recall ever checking the wheel bearings. This could be the problem,

A few days ago the alternator was rebuilt and put back. The problem was there before changing the alternator.

My brakes are also sqealing, the front right, when I apply the brakes.

The noise is coming from the right front on the wheel area.

Thanks for all your help,

Randy

[ramayah]

Hello Jerry and all responders,

I do believe it's a wind noise. I drove the car today and try to listen carefully where the noise is coming from. It looks like it's coming from somewhere around the hood. And it comes only when I am doing over 40mph. When I slow down I don't hear it,

I mentioned before I will hear it when the engine is warm. When it's warm is when I drive fast. So, I really thought I heard it when it's warm.

I will check the hood trim etc to see if I can find something out of whack.

Thanks

Randy

[bills2002]

I think you found it. I too had this noise and tried several different fixes until I got to the belt line trim around the front of the hood. I snapped it back in place with some new clips...no more noise.

[lostsurfer90]

could be your rubber weather seals around the windows....I replaced all of my dry-rotted seals when I replaced my front and rear windshield. Don't forget to check the rubber seals around the tiny triangle windows.... next to the driver and passenger

[bobthomas]

I had a trim whistle on my '71 when it was new.

[ramayah]

The seals on the vent windows look very good.