Brake Booster Stalling

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dabeersboys

NAXJA Forum User

Location

Colorado Springs

• Apr 6, 2007

• #1

I was wondering if a brake booster could cause stalling. My girlfriend 87 xj pioneer will stall occasionally when brake is applied. When your foot is on the brake there is a constant "ssssss" coming form it. Could is be leaking so much vaccume that is could be stalling the car sometimes?
-Matt

 

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oldradiostuff

NAXJA Forum User

Location

California

• Apr 7, 2007

• #2

Yes, absolutely. Sounds like the booster is leaking. New vacuum booster isn't that expensive.

 

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Rick Anderson

NAXJA Forum User

Location

Lusby, MD

• Apr 7, 2007

• #3

Concur, a bad vacuum leak can cause the motor to stall. The Brake Booster uses a lot of Vacuum, and it has valves and a diaphragm that changes as you press the brake pedal.

So, its very possible that a bad brake booster could be causing the motor to stall as you press the pedal, but run fine while the brake pedal is NOT depressed.

 

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dabeersboys

NAXJA Forum User

Location

Colorado Springs

• Apr 7, 2007

• #4

Could the problem be intermitent?

 

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oldradiostuff

NAXJA Forum User

Location

California

• Apr 7, 2007

• #5

Sure. Imagine a small tear in a diaphragm or other rubber component. Sometimes when you push the pedal it moves in such a way that the tear is held closed or sealed against an adjacent area,other times when you push the pedal the defect opens up. I would tend to suspect that this will only get worse.

 

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dabeersboys

NAXJA Forum User

Location

Colorado Springs

• Apr 7, 2007

• #6

Great, Ill see if that doest fix our problem.
-Matt