Hissing noise......I'm scared. lol

[GangGreenGang]

Hey guys. I'm getting a hissing noise from the car when its on. It seems to be coming from the brake booster area, but I can't pin point it and 4 technicians at my job can't find it. When I turn the car off I can hear it for about 5 seconds then it goes away. Any idea as to what that could be and how do a go about resolving the issue? Any input will be greatly appreciated, thanks. Later

[Ralphie]

Did you check all the vacum lines and hoses around the area to see for any holes or cracks?

Does the car drive normal or is their oddities somewhere?

[customchord]

Sounds like the Brake Booster is leaking. How long after you turn the car of do you have power brakes.

[GangGreenGang]

I did check the lines but could not find anything. The car runs the same, and there are no oddities, nor is the idle any different.

Sounds like the Brake Booster is leaking. How long after you turn the car of do you have power brakes.

Thats what one of the Techs said that it may be. But I don't understand what you mean by do I have power brakes after I turn the car off. Do you mean if I turn it off and press the brake pedal is it hard?

[C91BLX7]

Sure its not the noise that you get with an intake when you shut off the engine?

Just take the line that comes off of the booster and plug it and see if it happens

[customchord]

But I don't understand what you mean by do I have power brakes after I turn the car off. Do you mean if I turn it off and press the brake pedal is it hard?

Its kinda hard to explain. My civic had a brake booster that leaked and if you turned the engine off when driving the brake pedal would get hard in about a second and it wouldn't want to stop.

[GangGreenGang]

Its kinda hard to explain. My civic had a brake booster that leaked and if you turned the engine off when driving the brake pedal would get hard in about a second and it wouldn't want to stop.

Wow.....doesn't sound very safe dude...lol. I guess I could try that and let you know. And if that does happen.....then what?

[GangGreenGang]

Sure its not the noise that you get with an intake when you shut off the engine?

Just take the line that comes off of the booster and plug it and see if it happens

Nah, its not the intake. This just started happening about 2days ago. When I checked it and had the techs double check 9it they all agreed that it was around the brake booster area. They didn't pin point it to being the brake booster, but maybe a line in the area, though none of them could find it.

[GangGreenGang]

I checked the brake booster, and low and behold thats exactly what it was. My brakes are fine, the pedal does not get really stiff or anything like that so are there any risks I should be aware of because I can't afford to replace it right now, but I have to get around. Anyway...thanks for the help guys.

[david17]

i got the same problem know when i turn my car off it hiss for like 15 secounds is there a way to fix it and when my car stalls i got no brakes help me