2001 S80 brake pedal

  • Thread starter Thread starter Padraig
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Padraig

....has developed a hissing noise. Obviously vacuum. Brakes work fine.

Is this apt to be a bad brake booster or just a loose fitting?
 
Padraig said:
...has developed a hissing noise. Obviously vacuum. Brakes work fine.

Is this apt to be a bad brake booster or just a loose fitting?

Almost certainly a bad booster.
 
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