Hey guys a real odd behavior out of my powermaster hoping for some guidance from the forum
***Car is 10,800 mile survivor rarely driven. i think the accum bowl was original, it was much smaller than the cardone replacement i put on
1. hard brakes - blown fuse - replaced accumulator bowl. emptied and filled engine side fluid. I noted the pressure switch (grey) appeared to have some brake fluid inside the electrical plug in but didnt concern with it at that time
2. Turbotimmer forum member noted in a picture the engine side was awfully full so i extracted some fluid out
2. Car ran around town for about 4-5 miles and brake lite came on again - hard pedal - no brakes. small amount of fluid coming from somewhere, i suspect around the pressure switch but cannot tell for sure. it sprayed a little on the firewall, and trickled around the pump and master cyl. i washed it all away.
3. Here is the bizarre portion: I replaced fuse and began diagnostic per gnttype.com powermaster bullletin and when i cycle the key the pump stays on, the engine side of reservoir empties. when i turn the engine key off the engine side of the reservoir fills back up in about 60 seconds!!!!!
Here are my q's and I appreciate your guys time;
- can a bad pressure switch allow fluid from the accum bowl to come back to the reservoir
- can a bad pressure switch over pressurize an otherwise good accum bowl and ruin it?
- could the check valve allow fluid back into the engine side of reservoir
When i washed the fluid away from the engine bay i didnt note any significant fluid on the reservoir so i dont think fluid came from there. I noted fluid around the neck of the pressure switch.
***Car is 10,800 mile survivor rarely driven. i think the accum bowl was original, it was much smaller than the cardone replacement i put on
1. hard brakes - blown fuse - replaced accumulator bowl. emptied and filled engine side fluid. I noted the pressure switch (grey) appeared to have some brake fluid inside the electrical plug in but didnt concern with it at that time
2. Turbotimmer forum member noted in a picture the engine side was awfully full so i extracted some fluid out
2. Car ran around town for about 4-5 miles and brake lite came on again - hard pedal - no brakes. small amount of fluid coming from somewhere, i suspect around the pressure switch but cannot tell for sure. it sprayed a little on the firewall, and trickled around the pump and master cyl. i washed it all away.
3. Here is the bizarre portion: I replaced fuse and began diagnostic per gnttype.com powermaster bullletin and when i cycle the key the pump stays on, the engine side of reservoir empties. when i turn the engine key off the engine side of the reservoir fills back up in about 60 seconds!!!!!
Here are my q's and I appreciate your guys time;
- can a bad pressure switch allow fluid from the accum bowl to come back to the reservoir
- can a bad pressure switch over pressurize an otherwise good accum bowl and ruin it?
- could the check valve allow fluid back into the engine side of reservoir
When i washed the fluid away from the engine bay i didnt note any significant fluid on the reservoir so i dont think fluid came from there. I noted fluid around the neck of the pressure switch.