I have a 94' si and during very hot weather, my brakes get really soft.

While I'm sitting at stop lights, the brake will go softer and softer until the brake is depressed as far down as it can go.

I'm pretty sure this is heat related since it noly occurs when it's very hot out. What can I do?

 

Sounds like you need to bleed your brakes.

 

Yes check your master cylinder for damage and bleed the brakes.

 

exactly change your brake fluid and bleed your brakes and you should be groovy.

 

what they said

 

check your booster.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2lua &raquo;</TD></TR><TR><TD CLASS="quote">check your booster.</TD></TR></TABLE>

I've already changed the brake fluid and bled the brakes...no diff...
I haven't however checked the master cylinder or booster...what exactly am I looking for though?

 

Leaks.. oil everywhere. Look around the brake pedal too. I don't know if it can leak around there but that's where my clutch master cylinder died and leaked.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DanW &raquo;</TD></TR><TR><TD CLASS="quote">Leaks.. oil everywhere. Look around the brake pedal too. I don't know if it can leak around there but that's where my clutch master cylinder died and leaked.</TD></TR></TABLE>

Ok thanks alot!

 

You can check your booster very easily.

With the car off, pump the brakes until the pedal gets very firm. Now turn the car on and pump the brakes agian, if it's still very firm, then your booster is bad. If the pedal feels normal, your booster is fine.

EDIT: Sounds like fluid to me though. A leaky master cylinder would result in you always having a soft pedal.