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Weird noise coming from brake pedal

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I just noticed this weird sound coming from the brake pedal whenever it's pressed in.
I just installed the ABS module but not sure if that is related to the sound.

Brakes work fine, once i fully engage the pedal it's make the sound. I'll be checking for a vacuum leak later on tonight.

Any other ideas on what it might be?

Here is a short clip.

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" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>
 
Last edited:

ArizonaBOSS

Because racecar.
Moderator
8,730
2,734
Arizona, USA
Is there a bird trapped inside that bellows? Never heard an issue like this before. Sounds like something is building pressure then rapidly purging.
 

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