VS Exec Brake Issue

[Harvs82]

Hi Guys,

Just noticed this week when I drove the old's VS, that when you put pressure on the brake pedal there is a hissing sound, or if you push it right to the floor the hissing sound becomes much louder and consistent. Feels as though the pedal requires a bit more pressure than normal. Fluid level in the master cylinder is fine, and it's nice and clean, so I'm guessing it's going to be a booster issue, or the one way check valve thingy. Any ideas?

What would a new booster be worth these days?

Cheers

 

[Harvs82]

On a side note, checked the one way valve thing this afternoon, that is working perfectly, as the booster is getting plenty of vacuum. Seems to be most prevalent at 3/4 pressure on the brake pedal, and definitely more effort is required to really push the pedal down to stop hard. Engine RPM changes, almost falters a bit when letting go of the pedal, presumably due to additional un metered air entering the engine?

 

[BowTie]

Never had booster issues myself but it sounds like you're onto it.

 

[VR38]

Be getting that booster checked out.

How does the pedal feel, with the car off, pump the brake pedal 3 or 4 times, hold down and turn the engine on?