[garync1]

Most of the time if your brake booster goes bad it has a hard pedal. And are rare to go out unless the auto is old. I think unless the mechanic pulled the cowel off he did not bleed out the master properly. not too place blame you could check the proportion or equalizing valve under the driver side frame area under the van some times i have heard of them getting a slow leak almost not even noticed,just rub your fingers around it after pumping the brakes a few times also check around the ABS unit for slow leaks..If you want to check your booster pull the front cowel off pull the hose from the check valve and start the van push the pedal and you will notice a change. dont drive it because you will have to stand on the brakes to stop. over 20 mph.