The vaccume check valve for the brake booster also holds vaccume for the vent flaps. If this isn't holding vaccume after shutting off the engine, that would return the flaps to their resting position (closed) everytime you turn off the car. And of course, they would return to their vaccumed position after you restart the engine. How far can you push down the brake pedal with the engine off? Jim Reeve MNDMC - Minnesota DeLorean Club DMC-6960 --- In dmcnews@xxxxxxxxxxxxxxx, Dick Ryan <deloreanbiker@xxxx> wrote: > Oops - I msread Adam's VIN - we are a bit farther > away, but I DO still have the same "problem". > > > > __________________________________ > Do you Yahoo!? > SBC Yahoo! DSL - Now only $29.95 per month! > http://sbc.yahoo.com