My front brakes are locking up on my 97 blazer 4.3l.it started out with the brake pedal having no pressure when I pushed it,then it had too much.afew miles done the road I stopped and checked the wheels,the frnt rims were red hot an when I tried to drive the brakes where locked up for acouple hours.they loosend up for awhile then tightened up again.what could the problem be?
SOURCE: replaced the brake booster how do you adjust for
Possibly the Proportioning valve. its where the lines go after the master. it has a bleeder screw of some sort on it. The pins inside wear out and stick causing uneven pressure. Replace or rebuild it if that be the case. Also chect the master for fluid leaks at the end of the piston where it connects to the booster push rod. If its leaking rebuild or replace it.
SOURCE: Have developed a loud humming type sound from the
You have high and low spots on your tyres - swop wheels around to see if the hum moves to the front
SOURCE: I have a 2000 Toyota Solara with 27,000 miles on
if it were the rotors it only happens when braking take in have them turn rotors see what happens good luck
SOURCE: rear brakes locking(until abs kicks in) with
Even if the proportioning valve is wide open the rear brakes should not lock up, this is indicative of the front piston not working on the master cylinder, if there was a problem with the abs it would throw a code so to check use two people to do this one to apply the brakes and one to tun the wheel. apply the brake gently while turning it by hand with all 4 wheels off the ground, if the wheels stop at the same time for all for wheels then you have another problem, Do this with the key on engine off in neutral. It sounds like you have a problem with the primary brake shoe the front of drum brake in rear or if disk then the disk brake. Check to see if the Emergency brake cables are not binding if the e-brake is disc the wire cable where the wheel splitter is may be frayed and is keeping the emergency brakes applied and causing this to happen. If this is not explained in a way you can understand post a reply and tell me to clarify if you don't understand what I am saying. The reason I say to do it without running is it will not use the ABS system to mess with your results this will test the mechanical area, thats where i think the problem is. If you let to much fluid drain out it is possible when you started bleeding the brakes if you did not bleed the fronts first you may have damaged the master cylinder piston seal for the disk brakes.
SOURCE: 97 4runner---brakes locking up
your rear hub seals are leaking, which leak grease/hub fluid in to the drums which will make them stick.
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