i just did my brakes all around and replaced calipers, wheel cylinders, abs control valve, and abs module and my brake light on the dash still keeps on turning on and off when i hit the gas from a dead stop and turns off when i hit around 25 mph. while driving it will flash sometimes and also when i hit a bump, anyone else ever had this problem
CK5
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brake light flashing on dash 90 k5 with abs
- Thread starter p.o.s 78
- Start date
When the light stays on solid, this is an indication of a pressure imbalance between the front and rear circuits. This will be due to air in the system, either because of a leak or air bubbles. Bleed the brakes. Again. Bleed them more. (Well, the solid light can also be caused by a crappy connection at the switch on the parking brake lever. You might make sure there's no wires trapped on the lever and shorting out.)
When the light blinks, this is due to the ABS controller. Were it me I'd unplug the damn thing and leave it unplugged. Those early ABS were crap.
If you insist on keeping it (and you may if you just paid for a new one), count the blinks. You'll see two different speeds, like fast ones followed by slow ones (or maybe slow then fast, I forget.)
For example, four of one kind followed by two of the other translates to an error code of 42, or two then six would be 26. Then post up here or Google the code to find out what that code means.
Also, you replaced basically everything in the brake system except the master cylinder -- what was going on and why not the master?
-- A
When the light blinks, this is due to the ABS controller. Were it me I'd unplug the damn thing and leave it unplugged. Those early ABS were crap.
If you insist on keeping it (and you may if you just paid for a new one), count the blinks. You'll see two different speeds, like fast ones followed by slow ones (or maybe slow then fast, I forget.)
For example, four of one kind followed by two of the other translates to an error code of 42, or two then six would be 26. Then post up here or Google the code to find out what that code means.
Also, you replaced basically everything in the brake system except the master cylinder -- what was going on and why not the master?
-- A
well i went and pulled the wire from the low pressure sensor and the light still came on when i hit the gas, so plugged it back in and took the harness off from the abs controller and hit the gas again and it was still flashing. so now im pretty sure its shorting out somewhere
I had this same problem. Mine was a short in the wiring harness where it runs under the brake booster and behind the engine. I had several chaffed wires because the split loom was missing. Repaired the wires and loom, no more blinking brake light and a whole host of other problems were fixed as well.
