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Question about hissing noise from 03 Mach 1

  • Thread starter Thread starter Osnick
  • Start date Start date Mar 19, 2023
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Osnick

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Mar 18, 2023
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Mar 19, 2023
#1
  • Mar 19, 2023
  • #1
Question for anyone to see if they have encountered something similar.

On my stock 03 Mach 1, I have heard a hissing noise while on the brake pedal that goes away immediately when the pedal is lifted. It's very loud in the cabin, from the driver side floor. There are no issues with the braking that I can tell, and on starting the car, the booster drops the brake pedal and pushes back like it should. I was thinking from research online that it's the hydrobrake booster possibly. Living in Ohio (Cincinnati area) it's been 70 degrees and 30 degrees, only noticed the noise when it was warm out and was driven for a while.

Anyone with a similar experience or have any other ideas?
 
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