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Hissing Noise From Dash Of Mondeo

Astonm
Astonm
in Ford Mondeo / Vignale Club

Featured Replies

Hi chaps, just purchased an 2008 Mondeo 2.0tdci Titanium X. Its a great car but I have notice a quite loud hissing / Vacuum noise from the drivers side of the dash. Its not a high pitch hiss and its continuous until you stop (no volume changes)I think I can faintly hear it at a stand still

I turned off the all ventilation (opened and Closed vents) but no change, turned off the radio also.

Any ideas what this could be? Thanks in advance

astonm

  • Quote


    Could it be the air con pipes ?

  • Quote
    • Author

    Could it be the air con pipes ?

    Could be but I did have it turned off, the other way I thought of it is that it could be mixed up with a Vacuum noise?? Maybe that would change the diagnosis?

  • Quote
    • Author

    UPDATE: Well the hissing / vacuum noise is coming from behind the drivers side of the dash. It is a constant noise UNTIL that is you put your foot on the break!!!! When stationary you can hear the noise put your foot on break it goes completly.

    Any ideas??

  • Quote

    sounds like a seal on the brake servo has worn allowing air to bypass

  • Quote
    • Author

    Is that a big job?

  • Quote

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