Last weekend I replaced my rear Axle Housing in my 94 YJ. I hooked up all the brake lines, did a brake power bleed, adjusted the emergency brake cables, cleaned the emergency brake switch, road test, checked for leakes... the brakes works great! But, my Brake Warning Light stays on. How do I reset the system so the light goes out? Besides the Emergency Brake Switch, what would cause it to remain on?
the perportioning valve near the master brake cylinder will make it turn on i believe.
There should be a switch (single wire, it completes the ground) in the porportioning valve. Any debris (loosened up by the power bleed?) in the hydraulic lines can cause it to ground out & turn the light on. Test it by disconnecting the wire from the switch on the porportioning valve & see if the light goes out. If it doesn't go out, it's probably the E-brake switch, if it does, see if you can remove the switch from the valve & clean it up.
I'm not 100% sure of this, but I don't think that shuttle valve is actually made to stop the flow of fluid to either side. It simply reacts to the pressure differential between the two systems. Not there to stop a leak, just let you know it's there.
Someone will correct me if I'm wrong, but I think that's how it should work.
By staying put, you mean that the pedal won't go down when pushed? If so, then the bleeder is not actually cracked, or something is blocking the fluid flow upstream.
Which valve are you opening? On a caliper, or rear wheel cylinder?
I'm resonding to a crazy old thread, but wanted to say this info helped.
Recently started having funny brake feel, would be Hard brake sometimes, then super squishy. Bled the brakes to find that no fluid was comming to the rear brakes. Then one day while driving the brake was in the squishy mood, and when stopping at a light, it went all the way to the floor and i felt and barely heard a click. Immediatly the brake light on the dash came on. From then on, anytime i moved forward just an inch, the light would come one and beep. Very annoying. Still hard sometimes, squishy others.
Had my mechanic check, and found the cylinder was bad. Once replaced, he said the prop valve might be bad, because althought brake was acting normal again, the light and beep were still on. He left the switch unplugged and the light was gone, but as soon as it was plugged back in, light and beep. Didn't want to pay $200 for the prop replacement so i left it.
So just found this thread, and went and tried resetting the valve switch by stomping on the peddle. Took a couple of really good panic - like stomps, with jeep running and in park. then finally heard and felt a tiny click in the pedal. Tested it out, and can now drive normal, with switch plugged in, and no light or beep, AND my breaks are back to normal. So all is good under the hood.