Question about 2001 Volvo V70

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I have a 2001 Volvo V70 T5, that has a hissing sound when the brake pedal is depressed. Any ideas on checks I can do, before replacing brake booster. I am mechanically inclined.

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Hi,
Start your Volvo up push you break pedal down, shut your Volvo off with the break pedal down. If the booster is good the pedal should NOT go towards the floor board. It should hold in place.
If the pedal moves towards the floorboard the booster is leaking.
Wayne

Posted on Oct 15, 2010

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