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whistling brake pedal

 
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16/11/2020 7:47 pm
Topic starter

In the morning when I step on the brakes for the first time, with the car turned off and stopped, the brake pedal makes a kind of buzzing noise...then it doesn't do it until the next morning. What can be? Mazda 2 model 2015 with one hundred thousand KM


Gamaliel 
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16/11/2020 7:53 pm

sounds like a problem with the brake pedal switch


MountainManJoe
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16/11/2020 7:54 pm

Buzzing noise? Maybe just the diaphram in the booster moving. 


MrRangerZr1 
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17/11/2020 11:50 am
Topic starter
 

 
I suppose it is a problem in the check valve of the booster, because
I have noticed a loss of power when braking. Thanks for your answers, 
I will check the valve and let you know if the problem is resolved. Cheers

Gamaliel 
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