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What makes the rear brakes locks up when the brakes are applied?

When I apply the brakes the back wheels will lock up. I have replaced the porportion valve and the rubber brake line at the rear where it connects to the metal block. Also I disconnect the wiring harness from the porportion valve and they worked for a day. The next day I had the same problem.

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Sounds like the problem is with the front brakes not working right unless someone messed with the rears.

Posted on Apr 16, 2015

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Can I remove brake equaliser on 1996 ford bantam


Absolutely NOT. You will find your brakes will operate erratically. The rear brakes will lock up and skid way before the front brakes lock up. The amount of fluid the rear brakes take to apply even pressure is way more that the disc brakes up front. That is the purpose of the equalizer. It makes sure an equal amount of braking force is applied to all four wheels.

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After turning on truck .an go to accelerate the truck hesitates an makes a "Brake sticking sound wen throttle is applied. .on the Traxxas Summit. .Thankyou!


do you here rumbling also from one or both sides front or rear if its four wheel disc brakes one or more brake calipers can be locked up or the emergency brake is not releasing in the rear if drum brakes in the rear the return springs could have broken this is what pulls the brake shoes back when you take your foot off the pedal and will make a lot of noise and cause resistance because the brake for that wheel is partially or fully applied LATER MAN!

Aug 21, 2014 | Cars & Trucks

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I replaced my rear brakes. Does the emergency brake automatically adjust itself?


Yes.....and no. Emergency brake should have been checked during brake pad replacement.
Most do adjust to new pads...ie: return to factory adjustment setting due to new pads .

The E brake lever should be applying braking to the wheels after three clicks are heard during application of the Emergency brake.

Lift rear of car and apply emergency brake to the third click. Now both rear wheels should drag equally but not be locked up.
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If not, adjustment required.

However, late model cars need a scanner to pull back the pistons and install pads.

Jan 12, 2011 | Toyota Corolla Cars & Trucks

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My 94 c1500 has very spongy brakes.I have replaced brake booster,master cylinder,porportion valve and both rear wheel cylinders.brake pedal will get firm when applied too bleed brakes but not much fluid...


You still have air in the system. You will have to bleed more. I had to bleed a quart of brake fluid out of each wheel to get good brakes on my 1996 GMC.

Jul 29, 2010 | 1994 Chevrolet C1500

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Rear driver wheel locks up and abs light comes on


you may have a bad ABS module but you may need further diagnostics to confirm this

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2002 Silverado right rear wheel locking up.


You will need to have the parking brake adjusted to the minimum clearance possible and double check the shoes & drum while off.

It sounds as though the shoes are loose, they move forward, grab & unil you center the brakes by applying them and then they release until put into a bind again.

These usually don't get adjusted or even looked at since they are hidden inside the brake rotor hub on the rear wheels.

good luck.

Feb 15, 2010 | 2002 Chevrolet Silverado 1500

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Replaced shoes, drums,caliper,and springs on rear wheels and know in reverse the right tire locks what is it ?


the shoes not being adjusted properly or if one shoe has more pad than the other like a primary and secondary them wrong will also create this issue, also brake fluid on drums and shoes.

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Rear brakes wont apply consistantly


1- brake system low on fluid,
2- improperly bled (air in lines).
3- Master cylinder (applies equal pressure to all 4 cylinders) is bad.

Jan 08, 2009 | 1992 Chevrolet S-10

1 Answer

Driver side rear brake locks up when it is wet or rainy out.


the drivers side rear brake shoes may be adjusted to tightly, so that immedatly when you step on the pedal, it locks up. try adjusting them in a bit first. Also, make sure that the wheel cyliner is the correct one, and it is not to big. i have not ever seen a proportioning valve problem on a cavalier.

Dec 12, 2008 | 2001 Chevrolet Cavalier

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Brakes


Flexible brake lines are probably balooning out causing pressure not to build up, replace flexible to the calipers.

Jul 26, 2008 | 1989 Chevrolet Silverado 2500

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