S13 locking brakes

[kamikaze]

I still have this problem, when the brakes r cold they r normal but when I start driving they got pressure and start slowing the car down, to the point that all 4 calipers smokes (pedal is all the way up).
So far
I replace front calipers.
Flush the system.
Replace the brake master cylinder
purge system.
pads ok, rotors ok, pedal ok.
NON ABS.
Stock everything, lines etc

booster i dont think so, but if you can convice me i will replace it.

 

[Becker-Racing]

your still having this problem? wtf dude...i was about to do everything you stated this sunday...wtf...maybe kinked line somewhere?

 

[Elliot G]

did you check your vaccum booster???

 

[Vas]

did you check your vaccum booster???

Leave.

Sounds like a check valve or something, try finding a diagram of your brake system and going over everything individually.

 

[Dr. Dooms]

did you check your vaccum booster???

lol

 

[kamikaze]

any other source of solution? i already post in ka-t, nicco, 240sxforum,nissanforum....

 

[Dr. Dooms]

on the vacuum line that goes from the intake mani to the brake booster there is a one way valve..is it still there?
also did you think about your brake booster?

 

[Zero Method]

If it was the brake booster pedal would just be hard, unmovable. What kind of brake line hoses do you have rubber or stainless steel? Are you filling the reservoir more then usual? And what about the rears? The only thing I know is that fluid is getting to your caliper but not getting out. Check the lines.

 

[NissanGuyB14]

when they are locked up or locking up, and u push the breaks how does the pedal feel???

 

[Becker-Racing]

when they are locked up or locking up, and u push the breaks how does the pedal feel???

im havin the same problem...when the brakes lock up on there own the pedal is extreamly stiff. i dont know if hes havin the same problem with the pedal as well

 

[kamikaze]

im havin the same problem...when the brakes lock up on there own the pedal is extreamly stiff. i dont know if hes havin the same problem with the pedal as well

very same thing..............
i am able to brake but pedal is all the way up, and bc they r over heated takes time to stop, ahain it happens in all 4 wheels.

 

[Becker-Racing]

very same thing..............
i am able to brake but pedal is all the way up, and bc they r over heated takes time to stop, ahain it happens in all 4 wheels.

it only happens to my fronts...i had to have my pops drive my coupe to my new house i just bought from the old apt using the ebrake only to stop at lights lol..fronts locked up right before he pulled up to my house. maybe 3 miles away?? i hate chasing gremlins

 

[Mars]

sounds like your lines are clogged.

 

[Devil Man]

wait have both of you gotten new/rebuilt calipers?

 

[Becker-Racing]

wait have both of you gotten new/rebuilt calipers?

no this happened when i had my stock s13 calipers on...i changed the master,put stainless steel brake lines on and put j30 calipers up front(junk yard special) only thing i didnt do is flush the system which im doing sunday! possibly getting rebuilt j30 calipers to replace the junk yard ones

 

[kamikaze]

wait have both of you gotten new/rebuilt calipers?

well i put s14 calipers(that trigger the problem), but went back to the stock s13(which were working just fine).

Why?

 

[Becker-Racing]

well i put s14 calipers(that trigger the problem), but went back to the stock s13(which were working just fine).

Why?

so when you put the stock s13 calipers back on it solved the problem? or its still doing it regardless?

 

[kamikaze]

so when you put the stock s13 calipers back on it solved the problem? or its still doing it regardless?

I STILL HAVE THE F***ING PROBLEM

 

[NissanGuyB14]

ok im just spitting out ideas, to help out

1 maybe something is stuck in the brake caliper
2 bad brake lines
3 if all u havent changed was the brake booster, might as well go ahead and knock that out, if its doable

 

[Devil Man]

ok im just spitting out ideas, to help out

1 maybe something is stuck in the brake caliper
2 bad brake lines
3 if all u havent changed was the brake booster, might as well go ahead and knock that out, if its doable

brake booster isnt it that only assit the braking, i really am leaning to the damn brake calipers needing to be new/rebuilt cause the slide pin w/e the fuck is called i think is getting stuck. now if you could just get some new/rebuilt calipers and test that out and it still happens... then i dont fucking know...

im thinking that i am right i know its what i would do on my car if i had that problem

but fuck thats going on in all your brakes... im not totaly sure so take my shit as a idea, i am always one for replacing shit with new/rebuilt