I have a 1996 Saturn SL-2. I recently changed the front brakes. Everything was fine, up until now. The brake pedal holds pressure periodically. At times, I have to press the pedal to the floor. I checked fluid levels and it seems to be fine, an I get no brake MIL. What seems to be the problem?
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try adjusting the rear brake shoes but.....spin the rear wheels first is u get the feeling of the shoes grabbing then releasing ( the tire gets loose then tight as u rotate it) u will need to have the drums cut on a brake lathe or replaced...when u have this done , then adjust the rear shoes until u get a slight drag on the rear wheels..go pump the brake pedal to seat the shoes if the wheel spins free adjust the shoes more an repeat until they have a slight drag after pumping the brake pedal
MASTER CYLINDER SHOULD BE BENCH BLED BEFORE INSTALATION.PUT MASTER CYL. IN VISE-SHOULD HAVE COME W/RUBBER TUBES & ADAPTERS TO CURCULATE FLUID FULL STROKE OF CYL. TILL ALL AIR BUBBLES ARE GONE.THEN INSTALL MSTR CYL./GETT SOMEONE TO PUMP BRAKES THEN HOLD PEDAL FIRMLY WHILE YOU RELEASE BLEEDER VALVES ONE AT THE TIME FARTHEREST FROM THE MSTR CYL. TILL ALL AIR IS PURGED. REPEAT STEPS TO EACH BLEEDER TILL ALL HAVE BEEN DONE.GOOD LUCK W/THAT!
Assuming that the Tires for both Left and Right are:
1. Equal Sizes.
2. Both Properly Inflated - this is a common problem.
3. Have equal wear on them. Example: If the Left Tire is balding on the outside and the Right Tire is balding on the inside, this too is definite sign of an aligment issue; and will cause unequal braking.
Pulling left (or right) during a hard brake might actual mean your Wheel Alignment is way off. When you get one, get a 4-wheel and not just a 2-wheel alignment.
Also: you thought the right thing, but the Left Caliper or Left Brake Hose might also be bad (sticking) causing the left side to brake "harder" then the right side.
You can also Bleed the entire System (all four wheels) starting at the Right Rear, then Left Rear, then Front Right, followed by the Left Front.
Let me know if this helped, or if you have additional information or questions. Feel free to contact me at FixYa.com!
you say you replaced cylinders did you replace the master cylinder? if so before you install it you must bench bleed did you do this? if not to bench bleed it you need to take it back out and fill it with fluid then push the plunger in and out half a dozen times to get the air out of the cylincer. be sure that the rubber " O " ring or gasket is on the back of it beforeyou replace it. Then the next step is to bleed the brakes starting with the passengers side rear wheel hen the drivers side rear wheel then the passengers side front wheel and finally the drivers side front wheel as you bleed them you will need a second person to pump the brake pedal and hold it for you as you loosen the bleeder valve and let the air out and be sre that when the pedal hits the floor that the person inside holds it there until you have tightened the bleeder valve as to not let anyair back into the system. you will need to bleed each wheel until you get strait fluid with no air coming out. also keep in mind that through out this bleeding process you will need to keep topping up the master cylinder as if it gets to low on brake fluid it will allow air into the line. thus causing you to have to redo this entire bleedng process again.