We thought that the master cylinder needed to be changed so we installed a brand new master cylinder but that still hasn't fixed the problem, the brakes seem to be locking up on their own. We have took it on a test drive after installing the new master cylinder, and while driving the car around the brakes seem to be locking up and stopping on their own.
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.
SOURCE: Vibration when braking that I feel through the brake pedal.
Is it possible that you are hearing the abs pump running in the engine compartment? It sounds like an ABS problem with one of your wheel speed sensors.
SOURCE: Brake pedal now goes down to the floor after I slammed them...
Call up Saturn there is a recall on the brake booster and pulsing brakes, If you need anything else go to collisionrepairadvice.com
SOURCE: after new starter and new
STARTER RELAY INSIDE ENGINE COMPARTMENT FUSE AND RELAY BOX.LOOK ON THE FUSE/ RELAY BOX COVER. IT HAS DIAGRAM LOCATION FOR ALL FUSES AND RELAYS.IF RELAY GOOD.BATTERY GROUND CABLE NEED REPLACING.IT IT BEEN A LONG TIME OR BATTERY CABLES THE ORIGINAL SET CAME WITH CAR REPLACE BOTH BATTERY CABLES.
SOURCE: My 1997 Saturn SL-2 is having a brake lock
replace brake hoses they are braking down on the inside
SOURCE: i just purchased a 1998
Does it have to much oil in the engine? There may be some clogged oil ports in the engine or a malfuntioning oil pump. You could try doing an engine flush to see if it will help the problem. They sell it at the parts store for around ten bucks. Hope this helps.
Testimonial: "my mechanic cleaned the pcv valve which was stopped up and we drove it over 40 mile test run and so far the leak has stopped. i hope it is fixed. "
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