Powermaster ?'s

[stss96]

I have s-10 wheel cylinders and soft shoes and my car still can't hold any boost on the line. My powermaster motor turns on everytime i touch the brakes. I am guessing its not holding enough pressure. I replaced the accumalator and it does the same thing. Where to look next?

 

[BJM]

When you say it comes on every time, is that when you mash the pedal down or just when you push moderately. I can believe it if the pedal is mashed. If it does it when the pedal is pushed for a normal stop then its probably the pressure switch.

If its only when mashed and you hold it, does the pump shut off again or keep running?

 

[stss96]

It happens when you push on the brake moderately, I am going to try the pressure switch I just need to find a wrench thats big enough.