Vacuum leak when applying brake

[SpooN]

So just like the title says I'm experiencing a vacuum leak when braking. My initial suspect was the power brake booster but it's since been cleared of all charges. The culprit turned out to be a push button switch above the brake pedal that hangs out next to the brake light switch. Does anybody know what this switch is for?

Thanks dudes.

 

[chengny]

Cruise control brake switch. Disables the CC when the brakes are applied.

 

[SpooN]

That makes total sense! Though I'm not aware of having cruise control... Thanks man. Is this switch suppose to leak this way?

 

[DoubleDingo]

No it's not supposed to leak. Needs to be replaced, but an interim fix is to disconnect it's vacuum supply from the engine. That's what I did with mine until can replace every inch of vacuum tubing to that system, and replace that switch too. I thought my booster had gone bad too.