edit: 7-16-08
replace master cylinder and brake booster, bled brakes and come to find out im not getting any pressure on my rear drivers caliper, traced the line all the way to the abs where it is not getting any pressure out, but has pressure going in, going to replace the abs tomorrow


edit: 7-15-08
replace a caliper in the front
bled caliper and after bleading the pedal is rock hard and the "new caliper" along with others are locked up and arent releasing even after car is started up and running.... now what?

well since i got the car for a great price i didnt mind the problems that came with it, and one of them is the front calipers tend to stick every once in awhile out of the blue

its not just one of them but both seem to be sticking at random times, i can go for a drive and they will be perfect, then i will get back in the car and have a hard brake pedal and they can lock up so bad that it literally makes the car hard to get going

i figure there is no way both calipers went out at the exact same time, and at first i thought it was just because the car had sat for the past 8 months basically, but now i think its another problem and was hoping someone could help me troubleshoot and find out my problem as ive never had this happen before

i unplugged all the fuses to the abs to hopefully rule that out... now what?

july 9th

slide pins are fine, atleast in both the front calipers, i also bled both the front calipers.. its weird, bc after doing all of this i took the car for a ride and the brakes worked fine, so i packed up all my **** and went for a road trip and the brakes were locking up so bad i was wot in 3rd gear just to try to get to highway speeds, after about 5 miles the brake returned to normal and they were fine for the rest of the trip.... the following time i drove for a good 70 miles and absolutely no problems, stopped in at wal-mart and went to leave and they were locking up again

Modified by EARLdaSQUIRREL at 11:40 AM 7/10/2008


Modified by EARLdaSQUIRREL at 12:07 PM 7/15/2008


Modified by EARLdaSQUIRREL at 2:35 PM 7/16/2008

 

i was gonna say check the abs unit and sensors but i am not sure since you pulled the fuses if the problem will go away, maybe a bad master cylinder or brake booster? how are the rear brakes ? try jacking it up the next time to see if all 4 are dragging

 

I don't have my service manual with me but one thing to check on Toyota's is that the brake booster push rod depth has been set correctly. If set too long it will exert pressure on the master cylinder and apply the brakes.

Again I don't have my manual with me so I don't know if this is adjustable on the integra.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR.#1446 &raquo;</TD></TR><TR><TD CLASS="quote">i was gonna say check the abs unit and sensors but i am not sure since you pulled the fuses if the problem will go away, maybe a bad master cylinder or brake booster? how are the rear brakes ? try jacking it up the next time to see if all 4 are dragging</TD></TR></TABLE>

ya i plan on tearing into it next week to figure out the problem, im pretty sure its just the front brakes as the rears dont feel hot when i get out like the fronts due, so maybe its the prop valve or an air bubble or something? either way i will tear the calipers off and see if they are seized and maybe reblead them all

 

got a chance to check if all the brakes are locking up and it seems the front and rears are all locking up? anyone?

 

start with the brake booster and check the one way valve to make sure its on and working, seems like the booster is applying the brakes alittle

 

ya the one way valve crossed my mind, finally got her into a garage with tools so everythign can and will get checked over

 

well i checked the front calipers and they are fine, they arent seized at all, i put the fuses back in for the abs and its throwing a abs light, but i dont know how to check for it, i tried the jumper that does the check engine light and that just made the check engine light and the abs light stay on all the time without any flashes

 

i don't think you can read codes for abs from blinking the light think you need a special scanner

 

im pretty sure the abs codes can be read from the blinking abs light

 

you are supposed to be able to ck abs codes the same way as the ck eng.

 

ya thats what i did, and thought, but it throws a solid code, i checked all fuses etc and still cant figure it out, but would that be the cause of my problems?

 

if the calipers are ok then i would suspect the prop valve or the abs unit .. but a stuck prop valve will cause this problem

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stripped Honda &raquo;</TD></TR><TR><TD CLASS="quote">if the calipers are ok then i would suspect the prop valve or the abs unit .. but a stuck prop valve will cause this problem </TD></TR></TABLE>

and it would make it intermittent? i just dont want to go replacing parts and end up with a whole new braking system for one little stupid thing

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stripped Honda &raquo;</TD></TR><TR><TD CLASS="quote">if the calipers are ok then i would suspect the prop valve or the abs unit .. but a stuck prop valve will cause this problem </TD></TR></TABLE>

wouldnt a prop valve probably only effect the front or rear, not both at the same time? i was thinking it was my brake booster as that would effect all the brakes at the same time

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EARLdaSQUIRREL &raquo;</TD></TR><TR><TD CLASS="quote">

wouldnt a prop valve probably only effect the front or rear, not both at the same time? i was thinking it was my brake booster as that would effect all the brakes at the same time</TD></TR></TABLE>


i have never seen a bad brake booster cause any problems with the brakes locking up the bad brake boosters i have seen only have a vaccum problem not a locking up problem, there is a big spring inside the booster to return the rod when you release the brake so i really doubt that is what failed ... it is possible that your master cylnder is bad. i am sure you can find a used prop valve cheap and the master cylnder isnt too much .. i get them for 110 new for a OEM master

 

if brakes are sticking, it could NOT be the ABS system- this relieves pressure, not adds

could NOT be the vacuum booster one way valve

could either be the booster push rod adjustment is out(like stated), could be plugged brake lines(seen this a few times), or could be a bad master cylinder.

 

i have seen a bad abs unit lock up brakes on a accord and i doubt it is the push rod adjustment because if the adjustment was off then it would always be rubbing the brakes .. and wouldnt be a intermitent problem

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Stripped Honda &raquo;</TD></TR><TR><TD CLASS="quote">
there is a big spring inside the booster to return the rod when you release the brake </TD></TR></TABLE>

isnt it possible the spring gets caught or has something wrong with it, either way i know of a guy selling itr brake master cylinder and booster so i will try to work out a deal with him and do prop valve and abs while im at it lol

 

Why don't you first inspect the brake system itself? go from removing the calipers and checking the sliding pins and then up to the master cylinder. If i was you, i wouldn't go spending a bunch of money on unnecessary parts that probably aren't causing the problem. First off, you said this car has been sitting for 8 months; where is the vehicle from? Check to see if the sliding pins even slide. if there is no grease in there you can get binding effect (could have worn the pins down too much). Then, i'd do a brake flush since the system probably has soaked up moisture throught out the years. If this doesn't resolve the problem,

Check your master cylinder for leaks externally. If no visual leaks then probably suspect the master cylinder to have an internal leak. Master cylinders can leak internally from primary piston seal through to secondary piston or vice versa. Or the spring inside could be broken(not likely as seals giving out).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by INSANEONE &raquo;</TD></TR><TR><TD CLASS="quote">Why don't you first inspect the brake system itself? go from removing the calipers and checking the sliding pins and then up to the master cylinder. If i was you, i wouldn't go spending a bunch of money on unnecessary parts that probably aren't causing the problem. First off, you said this car has been sitting for 8 months; where is the vehicle from? Check to see if the sliding pins even slide. if there is no grease in there you can get binding effect (could have worn the pins down too much). Then, i'd do a brake flush since the system probably has soaked up moisture throught out the years. If this doesn't resolve the problem,

Check your master cylinder for leaks externally. If no visual leaks then probably suspect the master cylinder to have an internal leak. Master cylinders can leak internally from primary piston seal through to secondary piston or vice versa. Or the spring inside could be broken(not likely as seals giving out).
</TD></TR></TABLE>

x2

Slide pins are often overlooked...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by walker111 &raquo;</TD></TR><TR><TD CLASS="quote">

x2

Slide pins are often overlooked...</TD></TR></TABLE>

slide pins are fine, atleast in both the front calipers, i also bled both the front calipers.. its weird, bc after doing all of this i took the car for a ride and the brakes worked fine, so i packed up all my **** and went for a road trip and the brakes were locking up so bad i was wot in 3rd gear just to try to get to highway speeds, after about 5 miles the brake returned to normal and they were fine for the rest of the trip.... the following time i drove for a good 70 miles and absolutely no problems, stopped in at wal-mart and went to leave and they were locking up again

 

updated

 

updated

anyone else ever have this problem?