i was driving around town at 35mph, went over a pretty hard bump, and next thing my brake pedal is gone very hard, and i have basically no brakes.

some wierd ****, has this happened to any body?

any thoughts?

 

Take off the wheels and inspect the brake system.

 

what am i looking for?

seized caliper?

the car is driving fine

brake fluid?

 

anybody?

 

check vacuum lines at the booster!!

 

if the brakes work but you have to "stand" on the peddle to slow down, check the vacume hose that goes from the intake manifold to the brake booster, if everything is connected, there is a plastic valve in the vacume line, you will see it, take it off and blow into it from both ends, air should only be alloud through in one direction, if it goes through both ways, replace it.

i dont know if a hard bump would cause this but, a vacume leak from that hose will cause a hard peddle

 

i still have to check that valve, what is that valve called?

initially i did pull the hose of the booster while the car was running, and there was vacuum

also i drove it back home slowly, with my hand on the hand brake and WHENEVER i pressed on the brake pedal to slow down , there is hissing vacuum leak noise, and th epedal goes down very slowly while slowing down

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vvtli78k &raquo;</TD></TR><TR><TD CLASS="quote">i still have to check that valve, what is that valve called?

initially i did pull the hose of the booster while the car was running, and there was vacuum

also i drove it back home slowly, with my hand on the hand brake and WHENEVER i pressed on the brake pedal to slow down , there is hissing vacuum leak noise, and th epedal goes down very slowly while slowing down</TD></TR></TABLE>It's something wrong with the booster. Check your vaccum lines.

 

Your booster has a internal vacuum leak the hissing is the vacuum thats supossed to be asstisting the brakes.

 

is that internal leak fixable?

 

You'll have to replace the booster. The diaphram probably got wet with brake fluid ,more than likely you'll have to replace the master cylinder too 1)because it's bypassing fluid(you said it went slowly to the floor) and 2) because it will leak into the new booster and ruin that one.

 

how easy or difficult is it to change the booster. i have done mechanical work before.

anything to look out for?

any dos or don'ts?

should i go for aftermarket booster like centric or go dealer part or used salvage yard part

i found one on ebay

http://cgi.ebay.com/ebaymotors...ZWDVW

 

honestly it's a pain in the dick to get to the mounting bolts. they're way up under the dash against the firewall

since you're replacing it, i'd go ahead and upgrade to 90-93 integra booster & mc....if you have any aspirations for bigger brakes in the future?

 

no aspiration as such to upgrade in the future, tryin to keep the car as stock as possible

 

any write up aboit it hee on h-tech as to how to change the booster. i have figured that the mounting bolts are a pain, but i am determined to doit, as lond as my hands can get to it , i am doin it

 

to whoever had done this and some thing to think about.

are the 4 booster bolts which are a PIA behind the gauge cluster by any chance, i have this EM11 cluster sitting around and i was thinking about swapping it also.

just a thought