Richard :
You are right about the 'residual pressure' valve, it's stated purpose
is to keep the pads from being pushed too far from the rotors. Not all
cars have it.
However, it comes after the brake light switch in the hydraulic path, so
the fact he found the brake lights were staying on implies the problem
is closer to the MC.
Randall
RTriplett@bjservices.com wrote:
>
> Roger, there is a valve assembly consisting of a spring and piston on the
> front disc brakes. I think it is designed to hold a little pressure while
> stopped, or maybe to equalize the front and rear brakes. What happens is
> the valve doesn't release and the front brakes stick. Anyway, just remove
> the spring and that will fix the sticking problem. If you follow the front
> brake line down to where it splits off, there it is. Just remove the screw
> at the top and pull out the spring, then replace and re-bleed the line.
> I'm working here by (faulty) memory, so someone correct me if necessary.
> Richard
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