Brake Pedal Hissing?

[irtiza18]

I have a YouTube link to make this better understandable, basically, my 00 v6. When I depress the brake pedal to a certain position and hold it there, it sounds like hissing, I think that the brake booster is going out maybe. Would it be a costly fix?

YouTube Link: https://youtu.be/mMIZmu33DQQ

 

[phi1542]

I have the same issue on my 99 v6. It sounds like air is getting released somewhere and I get scared my brakes will fail or something. Doesnt seem normal so I'm in on the resolution if anyone has it haha

 

[irtiza18]

I have the same issue on my 99 v6. It sounds like air is getting released somewhere and I get scared my brakes will fail or something. Doesnt seem normal so I'm in on the resolution if anyone has it haha

Yea same here, i hope maybe its something not too serious, hey have you ever hold up the two front window switches and the engine makes a different noise for a few secs? then you let it go, and the tachometer jumps back to its normal position from going down. and if you hold it for too long you might short the switches, just try it for a few secs like 3 seconds.

 

[xci.ed6]

The motor pulls more power when it's stuck, like when the reg is all the way down.

With both stuck, follow the power supply until it meets where that and the cluster join. There you will probly find muck.

Hissing brakes:
Does it do it with the engine off? So have someone hold it down while you listen around the booster (with the engine on, under the hood) and the pdal shaft (under dash, tight fit with their feet ). Hear anything?

 

[phi1542]

Yea same here, i hope maybe its something not too serious, hey have you ever hold up the two front window switches and the engine makes a different noise for a few secs? then you let it go, and the tachometer jumps back to its normal position from going down. and if you hold it for too long you might short the switches, just try it for a few secs like 3 seconds.

I have no idea what youre talking about lol so I dont think so

The motor pulls more power when it's stuck, like when the reg is all the way down.

With both stuck, follow the power supply until it meets where that and the cluster join. There you will probly find muck.

Hissing brakes:
Does it do it with the engine off? So have someone hold it down while you listen around the booster (with the engine on, under the hood) and the pdal shaft (under dash, tight fit with their feet ). Hear anything?

I dont notice it when the engine is on but if I ever press the brakes when the engine is off I will hear it

 

[natedog_37]

Mine does the same thing.

 

[xci.ed6]

Does it constantly hiss while the pedal is held steady?

Or only while pressing?

 

[irtiza18]

The motor pulls more power when it's stuck, like when the reg is all the way down.

With both stuck, follow the power supply until it meets where that and the cluster join. There you will probly find muck.

Hissing brakes:
Does it do it with the engine off? So have someone hold it down while you listen around the booster (with the engine on, under the hood) and the pdal shaft (under dash, tight fit with their feet ). Hear anything?

Mine does it with ENGINE ON, and when its put into drive, you have to have to depress the pedal at a certain position in order to get the hissing sound

 

[phi1542]

Does it constantly hiss while the pedal is held steady?

Or only while pressing?

only while pressing

 

[irtiza18]

The motor pulls more power when it's stuck, like when the reg is all the way down.

With both stuck, follow the power supply until it meets where that and the cluster join. There you will probly find muck.

Hissing brakes:
Does it do it with the engine off? So have someone hold it down while you listen around the booster (with the engine on, under the hood) and the pdal shaft (under dash, tight fit with their feet ). Hear anything?

Can you better explain on the muck and following the system you're talking about? Im a bit confused sorry lol