I had brakes. Parked my Blazer. Went into Resturaunt to pick up pizza. Drove half way home. Suddenly stopping for a red light no stoppie. Went right thru it!!!!. Just kinda went real slow rest of the way home using L1 and L2. Now heres the thing, Pedal is hard. Doesn't grab until totally to the floor. But when I push the pedal it make a shhhhhhhhhhhhhhh sound?? Whats up with that. Im gonna check lines 2maro. but could it be dirt and caked mud? went 4wheelin 2 days ago got pretty deep in some thick stuff.

Is your brake booster line vacuum assist come off?

Is your brake booster line vacuum assist come off?
you know what, didnt check anything just parked(rolled real slow) into my parents driveway. and left it. where is it located?

You know after putting the truck back together after replacing the manifold gasket. I had a weird feeling I forgot to hook something back up. Maybe thats my problem. The brake booster vacuum assist line comes out of the firewall. To the manifold, right? I'll get right on it. 2mar0

Yeh check those vac lines.

yea, it should be the big hose coming off of the brake booster.

Sounds to me like you may have broken a brake line , or cracked one and it failed later . IS your brake light staying on in the dash ? If so , It would indicate you have an unbalanced brake fluid flow . Do you mean very hard pedal to feel any stopping power or does it go to the floor real easy and no slowing down . Two different causes . You could get the ssssshhhhh sound if the pedal goes to the floor because of the amount of air moving out of the power brake booster . If you did not connect the vac line , the engine would rev real high or rough . Rob

Bet you broke a front brake line , and the rear needs adjusting . Rob

Hard brake wouldn't indicate a broken line... More than likely it's the vac... The brake booster is the big round thing attached to the master cylinder (where you put in your brake fluid) From there a large hose (1/2" inner diameter, 3/4" outer) runs to the back of your intake... Make sure it's attached properly and no cracks and dry-rot...

Ok, it's10:30 . 4 hrs from when I started the brakes. checked the vacume line from the booster to the maifold. looked good. figured out where the last rubber ring went from the new gasket kit. (on the end of the fitting for that hose). jacked up the truck set it on stands. took off the wheels. removed the calipers. then shoes from that. cement like dried mud everywhere. got a hose and a brush. high pressured the hell out of anything brake related. a little dish soap. sparkling brake parts end result. brake kleened the hell out of everything. 2 cans. compressed the pistons. re-assembled both sides. replaced wheels. dropped jacks. started up put in reverse. HARD FOOKIN PEDAL!! DIDNT STOP . ONLY WHEN I PUSHED REALHARD. SAME "SHHHHHHHHHHHHHH" SOUND. SAME HARD PEDAL. oh and i put that "brake quiet " on. and boy were they quiet. lol. any other vacuum lines i should check. I know a little bit about brakes. and I'm stumped. Any suggestions will be much appriciated.

p.s.
i cleaned everything cause i thought the mud was sticking everything together. and the pistons seemed to move free'er after they were cleaned.

Ah, sounds like your brake booster is gone, you will have to replace it.

yep :iamwithst , and if your collapsing the callipers on a late modle car, i hop to god you are opening up the bleeder valve... if you want to keep your ABS happy anywayse

Ah, sounds like your brake booster is gone, you will have to replace it.
i am not questioning ur knowledge. but do u tthink maybe it could be somthin more simpler. or less expensive. lol.

start the moter and listen for a vaccume leak, use that break parts cleaner, spray the booster on the edge, listen for the idel to change (take the sencor off the intake) and the cheepest fix is KEEP IT ON THE ROAD GIRL lol but the most logical thing right now is the booster, no break assest = hard breaking, loss of power breaks...

After you check the vacuum lines and don't find a leak, I'd say you problem was the brake booster. Mine made a loud sound like air brakes on an 18 wheeler. Sound stayed no matter how long I had the pedal pressed. Wasn't the quick little hiss you get from normal opperating brakes.

I am sure yall know brake fluid is very corrosive to some materials . The master cylinder may be leaking into the booster causing it to fail also . Girlbear , Do you have fluid in the reservior? look in the floor board to see if it is wet . feel around the bottom of the booster drum for wetness( don't go there). You said in the first thread that it went to the floor , that would not be a failing booster. That is a loss of fluid or air in the lines . the more pedal travel you have , the more sssshhhh you will hear . but it should stop when you stop pushing the pedal . A booster can cost $150 rebuilt . Be sure first . Rob

I guess i'll have to buy a brake booster. i have no other choice. i can pout and bitch about it, but that gets me nowhere. The truck is like a stale cookie, just crumbling in my hands. The hip bone is conected to the broken rusty tail bone. ya fix 1 thing, then another thing breaks. it never focking ends. my S10 pick-up was the same way. Waterpump brakes ebrake muffler frame cracked window sizzor broke steering froze tranny numorous engine problems clutch. When I junked it it was a shell of a truck. Sad, very sad.

GirlBear, Just think of the knowledge your gaining from all of this, Hell, some people pay big money and go to school to learn all this shat. your just paying for parts Girl. Hell I'm proud, no we are all proud of you for kicking Ass on your blazer. Let us know how it goes!


:icesangel

I don't know if it's worth it but I've seen tons of boosters at the bone yard.

bought that bitch today, $132.82. $30 core. The dude said"Every time you come here the parts get bigger and are more expensive". I was like, what ever. lol. then some guy purchasing crap too, asked if I was the gofer. i snarled and flipped him the bird.(douche bag) puttin it in 2mar0. getting comfortable driving my moms mini van.<== very very very sad.2004 V-6 Oldsmobile Silhouette.NICE lol. Oh And I bought my own mini disk 2day. so im makin sure i have my own pics.

I don't know if it's worth it but I've seen tons of boosters at the bone yard.
yeah that was my 1st thought. a pick n pull. unfortunately only 1 near where i live. no boosters tho.

My Avatar doesn't load everytime. Wonder Y?

My Avatar doesn't load everytime. Wonder Y?
http://www.automotiveforums.com/vbulletin/showthread.php?t=452658

http://www.automotiveforums.com/vbulletin/showthread.php?t=452658
thanx 4 the heads up.

GIVE UP THE MINIVAN QUICK , THEY CAUSES BABIES !!!!!!! We need you to keep up the mechanic training class . If wanted something that did not need fixin all the time I would have kept my rice burner . BUT I wanted to go ALL AMERICAN .So only my replacement parts come from abroad . Rob

My avatar doesn't come up all the time either . AND I still can't include a quote DUH . Rob

My avatar doesn't come up all the time either . AND I still can't include a quote DUH . Rob

Mine randomly comes and goes too. What tee'd me off the other day was trying to research a thread that I KNOW I posted something in. I hate it when a website makes me really feel like a raving lunatic. ;)

started it 2day had to wait 4 my sis to get home. needed her to wrench the 4 nuts from under the dash on the back of the booster. I couldn't do it. got a knee injury from wrestling with my brother a year ago. can't kneel, or bend or keep bent for periods of time. got off cylinder drained fluid tho. she got the 4 nuts off. 2maro i'll disconnect the linkage. have her bolt it up. and honestly those friggin nuts are almost impossible to get to. took her 1 almost 1.5 hrs just to get 'em off. tight space. 2mar0 is gonna b a bitch. I gotta put it all back together refill with fluid. then bleed each indavidual brake. Damn! Got pics 4 2mar0's post too.

dont forget to bleed the master!!!

dont forget to bleed the master!!!
Pervert!

Pervert!

Define perversion... :iceslolan

I think the constant "NUT" referrences got to them. I thought it might. nut nut nut. there ya go.and yes i did bleed the master. i am now officialy a MasterBleeder. lol lol. Tried to upload my pics to my computer. only works with XP. be up 2mar0. gotta use my moms computer. don't wanna jinx it but, my blazer runs like a top now. and stops just as good!

Girlbear's in da house.............

Well i'm kinda disappointed. although these photos show what i did. the pics i took of the gasket replacement are still mia.


#1 in the begining
http://img350.imageshack.us/img350/4333/0141ap.jpg
#2 The tear down Master Cylinder off
http://img350.imageshack.us/img350/7402/0134eh1.jpg
#3 Wide View of the situation
http://img350.imageshack.us/img350/1511/0124ty.jpg
#4 Underneath it all
http://img350.imageshack.us/img350/5494/0107dm.jpg
#5 Booster Off
http://img350.imageshack.us/img350/6948/0091lw.jpg
#6 Wide Shot of Booster hole
http://img350.imageshack.us/img350/7841/0078to.jpg
#7 Booster Hole from inside under the dash next to brake pedal
http://img307.imageshack.us/img307/1127/0058uq.jpg
#8 Side by Side
http://img307.imageshack.us/img307/4442/0061xg1.jpg
#9 Out with the Old in with the New
http://img307.imageshack.us/img307/5940/0042yz.jpg
#10 Finito
http://img307.imageshack.us/img307/4218/0011hs.jpg
Sorry for the lack of details kinda too busy on this 1 to take more pics. but i hope you guys get the gist of it.

Fine Job GirlBear...

if your breaks a spongy within the next day or so, it means air in the system and you should re-bleed... but excellent job girl

if your breaks a spongy within the next day or so, it means air in the system and you should re-bleed... but excellent job girl
not spongy. but very low almost to the floor. and antilock come on at lower braking speeds. im gonna have a brake joint ajust'em 4 me i think. kinda busy. dont get me wrong they work fine. better now than entire time i had the truck b4 new booster. maybe just needs getting use to them. ?? idk

abs as in the light or accual action of breaks anti locking-ing?? :eek7: check the fluid level, and no a low break peddle isnt a get use to item, unless it was high on you then its normal and not low, but seince your use to it, it would be low, sorry had to ramble like an idiot

abs as in the light or accual action of breaks anti locking-ing?? :eek7: check the fluid level, and no a low break peddle isnt a get use to item, unless it was high on you then its normal and not low, but seince your use to it, it would be low, sorry had to ramble like an idiot
yeah well apparently my time table has been opened up. my mother told me my brother needs his ar fixed. he has to work. (new job) Sherrif Corrections officer. needs transpo. i will make my time avail 4 him and while doing his car im gonna re adjust my brakes. there i rambled too.