[Chris1337]

I am fbo e50 n55 e92 and when I brake hard I hear some squeaking noise for a second or two then it goes away. I am going to replace the top piece of the pcv system that is known for failing. assuming this fixes the issue, is there any way to check if the rear/front main seals are still good? I don't hear the noise anywhere near as much as other people.

thanks

[bluewater328]

Where do you hear the sound originating from? What other things happen: shuddering/vibrations; feedback on the brake/steering wheel; is it more of a whistle or a creak?

[Chris1337]

Originally Posted by bluewater328

Where do you hear the sound originating from? What other things happen: shuddering/vibrations; feedback on the brake/steering wheel; is it more of a whistle?

It sounds like a whistle going in and out almost like a dolphin. No feed back literally just the noise.