SwedeSpeed - Volvo Performance Forum banner
1 - 6 of 6 Posts

·
Registered
Joined
·
128 Posts
Discussion Starter · #1 ·
Question for everyone. We have an '01 V70 T5, 93K on it. After letting up the brake pedal, we get a hissing sound. Sometimes, but not always. And some times it happens for a few seconds, other times longer. There seems to be no correlation between if it happens and for how long to how hard/long I depress the brake. It doesn't seem to affect the braking at all and it's been happening for some time actually, I'm just now getting around to asking. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0"> Happened before and after I did the front brakes as well.<p>Any thoughts?
 

·
Registered
Joined
·
207 Posts
Re: Brake hissing? (alstensby)

Brake Engineer Hat ON - <p>Possibly booster. Do you have any other symptoms like a hard pedal (possibly only after being parked)?<p>Brake Engineer Hat OFF<p>Landru<br>01 V70 T5M 206k miles
 

·
Registered
Joined
·
63,543 Posts
Re: Brake hissing? (alstensby)

Not possibly, <B>DEFINITELY.</B><br>2001's had bad brake boosters, you will need to replace it ($$$) or at some point it will just split open and.....NO BRAKES! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/eek.gif" BORDER="0">
 

·
Registered
Joined
·
128 Posts
Discussion Starter · #4 ·
Re: Brake hissing? (alstensby)

I've never had an issue with a hard pedal when it comes to depressing it. If anything, it actually feels a bit softer than most I'm used to (domestics, commonly GM). Hasn't concerned me since the braking is solid (even when towing) with a minor adjustment to how I'm braking...it's not even a conscious effort since the adjustment is so minimal. Are there any other symptoms perhaps? And, frankly, I should have brought this up some time ago since it's been happening for about 20K. Ha ha!<p>Where's the brake booster located and is it something I can access? I'm pretty mechanically inclined and have a good tool selection.<p>Or is there a way to inspect it so I can know if that's what it is?
 

·
Registered
Joined
·
440 Posts
Re: Brake hissing? (alstensby)

I just re-seated the bellows on mine. No more hiss. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"><br> <br><A HREF="http://www.volvoxc.com/forums/showthread.php?t=13675" TARGET="_blank">http://www.volvoxc.com/forums/...13675</A>
 

·
Registered
Joined
·
128 Posts
Discussion Starter · #6 ·
Re: Brake hissing? (alstensby)

Thanks, TW! You're the only other MN resi I've seen on here. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 
1 - 6 of 6 Posts
Top