I have a 96 villager that I think has the same issue. It all started with the driverside front caliper hanging up. I bought a new caliper and now I can't get the brakes to bleed. I've ran a quart through each bleeder bolt using the pattern in the manual but brakes still feel squishy and after sitting over night at first morning start they have to be pumped up or pedal goes right to the floor. The old caliper was able to be compressed so i'm thinking it's this valve, but I have no clue where the valve is located or what it looks like. I PM'd Corem, but no response yet. Does anyone else know anything about this valve?