Spongy brakes on 97 ITR, Have tried almost everything.
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Spongy brakes on 97 ITR, Have tried almost everything.
I purchased a 97 ITR a year ago to rebuild for a track car. All the oem brake hard lines were cut. I replaced them all with good ones from the wrecking yard.
Installed a new oem Honda master bled all 4 brakes, no air bubbles left. Car has always had spongy brakes since day one. I've bled the system over 7 times within the past year trying to get rid of the problem. I've recently changed the master to another oem Honda one and still spongy.
I've even tried changing the abs module with another one from a running car and still spongy. I'm running out of ideas so any help or ideas is appreciated.
Tracked the car about 6 times already and I never lose any fluid or pedal dropping. Brakes good but pedal is spongy and not like my previous ITRs.
- New good ridge stainless brake lines.
- New powerslot rotors
- New pmu club racer front n rear pads
- rebuilt front calipers rear calipers were on a friends car without issues
- motul rbf600
- changed the brake booster twice
- new Honda mc twice
- abs module once
Installed a new oem Honda master bled all 4 brakes, no air bubbles left. Car has always had spongy brakes since day one. I've bled the system over 7 times within the past year trying to get rid of the problem. I've recently changed the master to another oem Honda one and still spongy.
I've even tried changing the abs module with another one from a running car and still spongy. I'm running out of ideas so any help or ideas is appreciated.
Tracked the car about 6 times already and I never lose any fluid or pedal dropping. Brakes good but pedal is spongy and not like my previous ITRs.
- New good ridge stainless brake lines.
- New powerslot rotors
- New pmu club racer front n rear pads
- rebuilt front calipers rear calipers were on a friends car without issues
- motul rbf600
- changed the brake booster twice
- new Honda mc twice
- abs module once
#3
Re: Spongy brakes on 97 ITR, Have tried almost everything.
I recall that the ITR has a different bleeding order than the other integras. Is it possible that you're bleeding them in the wrong order?
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
I have always bled RR, LR, RF, LF
are the slide pins properly lubed?
Tech here at acura said bleed LF,RF, LR, RR
are the slide pins properly lubed?
Tech here at acura said bleed LF,RF, LR, RR
#7
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
Careful reading of the link provided will reveal the following:
"Type III ABS systems most post 96 cars will have the low pressure ABS system. these ABS systems do not have an Accumulator nor a ABS brake fluid resivor. They are blead as you bleed your brakes."
You shouldn't need to do anything special to bleed the ABS on the 1997.
"Type III ABS systems most post 96 cars will have the low pressure ABS system. these ABS systems do not have an Accumulator nor a ABS brake fluid resivor. They are blead as you bleed your brakes."
You shouldn't need to do anything special to bleed the ABS on the 1997.
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#8
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
Always bleed from the farthest from the MC and work your way closer. Also, you didn't mention how your bleeding. Speed bleeder? Or 2 man one on caliper, one on brake pedal method?
I always have preferred the manual way of 2 person.
#9
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
Is it possible you have a flex line collapsing? I've seen brand new rubber lines collapse when pressure was applied. Worst is it's hard to physically see happening. Good luck.
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
I have brand new stainless steel lines. I've replaced the stock rubber hoses with the stainless and it still feels the same.
I've bled it all kind of different ways doesn't help. Front front to back or from the rear to the front, same crappy feel. Always bled it by the two man method.
I've bled it all kind of different ways doesn't help. Front front to back or from the rear to the front, same crappy feel. Always bled it by the two man method.
#11
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
When you bleed, are you just bleeding a little fluid and looking for bubbles, or bleeding quite a bit?
While I know the Motul stuff is expensive, I'd try bleeding more, like a lot more per corner. Just to make sure there's no air still trapped in there somewhere.
Usually spongy is leaking seal, or air.
While I know the Motul stuff is expensive, I'd try bleeding more, like a lot more per corner. Just to make sure there's no air still trapped in there somewhere.
Usually spongy is leaking seal, or air.
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
When you bleed, are you just bleeding a little fluid and looking for bubbles, or bleeding quite a bit?
While I know the Motul stuff is expensive, I'd try bleeding more, like a lot more per corner. Just to make sure there's no air still trapped in there somewhere.
Usually spongy is leaking seal, or air.
While I know the Motul stuff is expensive, I'd try bleeding more, like a lot more per corner. Just to make sure there's no air still trapped in there somewhere.
Usually spongy is leaking seal, or air.
#13
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
When you say a bottle, your talking an entire Motul bottle? If so, then I'd imagine your not having an air in the line issue, that is IF you don't ever let the MC get low to introduce air in again.
One other thing, after you bleed, leave the MC cap off and pump the brakes. See if any bubbles come back up. Refill with fluid and go.
One other thing, after you bleed, leave the MC cap off and pump the brakes. See if any bubbles come back up. Refill with fluid and go.
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
When you say a bottle, your talking an entire Motul bottle? If so, then I'd imagine your not having an air in the line issue, that is IF you don't ever let the MC get low to introduce air in again.
One other thing, after you bleed, leave the MC cap off and pump the brakes. See if any bubbles come back up. Refill with fluid and go.
One other thing, after you bleed, leave the MC cap off and pump the brakes. See if any bubbles come back up. Refill with fluid and go.
I was thinking about changing the distribution block on the firewall but I don't know if that would ever go bad and have internal leaks.
I've changed the brake booster twice, also changed the check valve too.
#16
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
Have you re-inspected the brake calipers? Just to make sure there are no leaks? Also, under the dash on drivers side, any wet spots on the carpet or firewall?
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
I have not reinspected the caliper seals as I changed them and they did not change the pedal feel at all. No leaks under the dash on carpet or anything. Nothing on the brake booster under the Master either.
#18
Re: Spongy brakes on 97 ITR, Have tried almost everything.
hummmmm
there really is not that many mo9ving parts to the brake system, you are doing everything I would...I will keep at it... have you checked the vacuum line or replaced that also?
there really is not that many mo9ving parts to the brake system, you are doing everything I would...I will keep at it... have you checked the vacuum line or replaced that also?
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
The car holds perfect idle with the brake booster vacuum line so I doubt changing it would do anything.
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
I'm having the same problem. I upgraded my brakes on my 93 civic Cx installed 1" MC, GSR brake booster, 40/40 proportioning valve, goodridge steel braided lines, GSR brakes all around. Having spongy brakes ONLY when car is on. Have already replaced the MC and booster twice bled the system plenty of times starting from the rear (rr,lr,rf,lf). Is this the same issue?
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Re: Spongy brakes on 97 ITR, Have tried almost everything.
I did not fix the problem yet, I was thinking of getting rid of the abs. Not sure if it's from the abs system or not but it's worth a try.
I've had all the non-abs lines and prop valve from a 98 RS new from the dealer but haven't changed it yet. Going to try to fix it a couple more times and if I can't fix it I'll install it.
I've had all the non-abs lines and prop valve from a 98 RS new from the dealer but haven't changed it yet. Going to try to fix it a couple more times and if I can't fix it I'll install it.