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I have a 91 Capri and the brake pedal seems to fade off when applying the brakes. I thought it was the Master Cylinder so I replaced it. When I tried to bleed the brakes a line broke. I took it to a mechanic who replaced the line and bled the system but the pedal is still fading and the mechanic says it needs a new Master Cyclinder. Pleas help!!! what else could the problem be?

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  • 54 Answers

Could be the brake power booster leaking (losing pressure/vacuum).

Posted on Aug 30, 2017

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Posted on Jan 02, 2017

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vmhreha
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SOURCE: 1999 Dodge Ram 3500 Pickup - Clutch

Either you have to pull off the old clutch assembly(Master, slave cylinders, reservoir and the line),since its a factory sealed unit and replace with a new one or one from another vehicle, or , see if a parts store has the new ones out. The slave cylinder is the one with the bleeder valve.

Posted on Jun 05, 2008

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SOURCE: Spongy brakes after bleeding them 2 times. Should I try to bleed the master cylinder or replace it?

Honestly your guess is as good as mine. But I don't think the master cylinder is NOT bad you still have air in the system. Get a big bottle of brake fluid bleed all four sides until you run out of fluid or your brakes work properly. You should divide the bottle's content in four, then use each quantity in each side. You'll be removing air and contaminated fluid from the system. Get a small hose that fits on the bleeders and an appropriate container. I have a good feeling if you do this your brakes will work just fine. I don't know how you are bleeding the brakes. I'll let you know the proper way just in case. This is a two man job, with the wheel off, have someone start the car. Have them pump the brakes a few times to get pressure. 1With the brake pedal UP open the bleeder, 2then have your assistant press the brake pedal all the way down and leave it completely pressed down. 3Close the bleeder valve, once close and only with the valve closed have'm release the brake. Repeat as necessary, bake depressed, open valve first then press brake. DO NOT depress until valve completly closed. Close valve THEN depress. Good Luck!

Posted on May 15, 2009

  • 60 Answers

SOURCE: replaced brakes and accord brake pedal goes

After replaicing braking parts need blow out air from the breaking line.

Posted on Aug 08, 2009

  • 1 Answer

SOURCE: brakes need to be bled

i have a mr2 year is 92 iand my rear caliber is not working so i got caliber from a 90 modle are they boht the same size can any1 tell me please

Posted on Apr 05, 2011

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2 Answers

2005 Camry. Having difficulty when I apply brakes. Pedal goes almost to floor. Eventually stops. Had brake pads, drums and calipers checked, they seem fine. Any suggestions ?


Low brake pedal almost always indicates a compromised hydraulic system. Check you brake fluid level. If it is ok and you haven't had anything replaced in the brake hydraulics system lately, such as a wheel cylinder or brake caliper, then the primary suspect is the master cylinder.

Jan 02, 2015 | Cars & Trucks

1 Answer

I have a 1991 Mazda Navajo and put a new master cylinder on it and now I have brake pedal fade .


bleed the whole system back to front..still fade you are getting air somewhere... may have to bleed the master out of the car then put back

Dec 14, 2014 | 1991 Mazda Navajo

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Why do the brakes keep locking up?


That's usually caused by a misadjusted push rod going into the master cylinder OR a misadjusted brake pedal switch. When either are out of whack it won't let the master cylinder piston return all the way to home, so it covers up the relief port in the M/C. As the brake fluid heats up and expands it can flow back through the relief port, so the pressure continues to build and it actually applies the brakes.

Oct 03, 2017 | 2008 Saturn VUE

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Brake pedal fades after starting vehicle,replaced master cylinder,bled brakes


mcdevito75 here, you:ll have to be alittle more secific with your problem, does the pedal fade at a red light?? The power brake assist will cause the pedal to fade just a shade, if your drums / Rotors were cut to often or cut too much the pedal will fade, also make sure you have brake linning

Jun 17, 2010 | 1995 Nissan Pickup

1 Answer

Brake pedal wont hold when applied


After replacing the wheel cylinder, did you bleed the entire brake system? If not, do that first.
If you are still having problems with the brake pedal going to the floor after bleeding the system and there are no other leaks in the system, it is probably the brake master cylinder. Replace the master cylinder and follow the proper proceedures for that, including the bleeding of the new master cylinder.
Mark

Aug 01, 2009 | 1994 Honda Civic

2 Answers

I have a 1989 gti, the front brakes were locking up after I drove it for a few minutes, so I went ahead and replaced, pads, rotors, calipers, caliper pins, master cylinder, and brake lines, however the...


I had this same problem on my 90 Jetta but it was the master cylinder that was the problem, I first replaced the master cylinder because it was leaking badly. The new master cylinder I put on was a manufactured defect, the internal piston inside the master cylinder was not machined enough (10mills too long) so when you applied the brakes the piston would not move far enough to release the brakes but after 20 mins they would slowly release themselfs just as you said your brakes do. The only thing that can cause this problem (if you have changed everything) is the master cylinder or the brake pedal itself, did you do anything to the brake pedal or near it to change its movemment ? Make sure the brake pedal once depressed returns fully to the float position where it should be. I would try another master cylinder preferrable a used one from another vdub the same as yours, eg year,model and country of origin some parts are different if it was made in Mexico or Germany. Its going to be a pain in the *** to have to replace the master again but I see no alternative. There is one more thing you can check I just thought of....check all your brake lines from the master to the calipers for any signs of dents or sharpe curves if the metal brake line is bent too much it will restrict the flow of the fluid returning to the master cylinder after brake pedal release but not during braking. Good luck

Jul 31, 2009 | 1989 Volkswagen GTI

1 Answer

1991 jeep comanche brakes


check under dash for leaking vaccum switch. usually manufacturers use vac switches to release the e-brake automatically when applying the brake.

Jul 17, 2008 | 1991 Jeep Comanche

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