Is it normal for the brake indicator light (on the instrument panel.... the
same one that comes on when the parking brake is on) to come on when you
stomp on the brakes pretty hard?
This happens, even when not moving, such as in park or neutral, of you mash
it to the floor, it'll come on, and then go off when I let up. However,
when moving (say 35 Mph), and then stomping on them really hard (but nto
quite locking up the wheels), it'll come on, but then it will sometimes stay
on after letting off the pedal.
This light was on about a week ago, I bled the rear brakes, since I let the
resivour for therears get too low and got air in the line, and the light
went off. I just happened to notice that the light came on during heavy
Normal or not?
When the plunger in the proportioning valve is pushed off center it will
trigger the brake light to indicate there is something wrong with the brake
I would bleed the entire brake system and see if the problem goes away. If
not I would check for rusted through brake lines or leaks at the brake
calipers or wheel cylinders. If those check out OK then you might just need a
new proportioning valve.
An overfilled reservoir can also cause the light to come on. If the
reservoir has a fill line or arrow pointing to a fill level, fill the
reservoir only to that point, after system has been charged (start
engine, run for about a minute, and turn engine off).
I think the only things that influence that light are the Parking brake, and
the proportioning valve.
Within the two years, I think just about everything in the braking system as
been re-done, except the brake lines themselves. New master cylinder, power
brake booster, new rotors on the front, new calipers on the front, new pads
on the front, new cylinders on the rear, turned the drums, new shoes on the
Is it unheard of for a proportioning valve to croak?
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