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89 Crx brakes not working

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89 Crx brakes not working

Postby Daniel_r16 » Fri Jul 01, 2016 5:50 pm

I'm in need of some help with my brakes. They're not working at all. It happed out of no where when they stopped working. I replaced the master cylinder and the brake booster and the brake hoses and still no lucky. The front brake pads where just changed out a couple of months ago I'll say about 2-3 months ago with the rotors and I took off the rear drum and the drum looks in good shape and the shoes look pretty good. I didn't see no brake fluid leaks anywhere. Any ideas what else it can be? Thanks in advance
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Re: 89 Crx brakes not working

Postby jpciii » Sat Jul 02, 2016 2:02 pm

what exactly does "not working" mean? What are the symptoms?
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Re: 89 Crx brakes not working

Postby NovaVTEC » Sat Jul 02, 2016 3:15 pm

What was wrong with the cylinder and booster?
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Re: 89 Crx brakes not working

Postby Daniel_r16 » Sat Jul 02, 2016 6:03 pm

The brake pedal goes all the way down.




It was my best guess that it would of been the booster or mc
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Re: 89 Crx brakes not working

Postby Daniel_r16 » Sat Jul 02, 2016 6:07 pm

Update:
Every time i press the pedal I hear air being released I guess from the booster
By the way the mc was new and the booster was a reman
Could it be the booster?
Thanks for the help
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Re: 89 Crx brakes not working

Postby NovaVTEC » Sat Jul 02, 2016 6:25 pm

That sound is normal. You have a leak somewhere else...
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Re: 89 Crx brakes not working

Postby Daniel_r16 » Sat Jul 02, 2016 6:48 pm

Any guesses where it might be? I swap over the booster hose from my 90 Crx and it's still the same thing. On my 90 Crx the brake is hard and doesn't sound like air is being released.
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Re: 89 Crx brakes not working

Postby NovaVTEC » Sat Jul 02, 2016 8:23 pm

The master cylinder does not move with the healthy system. Therefore no air rushing sound. No puddles under the car when you repeatedly pump the pedal? Does the fluid level drop?
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Re: 89 Crx brakes not working

Postby jpciii » Sun Jul 03, 2016 10:20 pm

Did you bench-bleed the master cylinder before installation?
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Re: 89 Crx brakes not working

Postby Daniel_r16 » Mon Jul 04, 2016 1:17 pm

I don't see any type of fluid leak on the ground and I have pressed the pedal at less 30-40 times and nothing. I bench bleed the master cylinder and the lines again and nothing.
Update:
The one thing I have notice is that every time I press the brake the rpm goes up a bit. Is that normal or is that caused by a leak in the vacuum system?
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Re: 89 Crx brakes not working

Postby NovaVTEC » Mon Jul 04, 2016 1:44 pm

Normal. Does the level drop?
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Re: 89 Crx brakes not working

Postby Daniel_r16 » Mon Jul 04, 2016 8:15 pm

No the fluid level stays the same even after it being pumped 30-40 times.
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Re: 89 Crx brakes not working

Postby NovaVTEC » Tue Jul 05, 2016 8:36 am

Is there some fluid movement under the reservoir cap when pumping?
It still seems your cylinder is dead or the pedal isn't connected... Or bleeding wasnt done right.
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