Hi there,
I have an issue with my brakes. After driving awhile my brakes lock on. If I pull the vacuum hose from the brake booster, they release but lock again after a time. If I leave the vacuum hose off, they don't lock up at all but are too hard to use with any degree of safety. Is there some sort of pressure release valve in the vacuum system that could be an issue. I was hoping someone may have had a similar issue before pulling it all apart and replacing parts unnecessarily. It feels like the vacuum booster is pulling the brakes on fully instead of just assisting in their operation.