Possible vacuum leak at the booster? Probably would have heard that but with how cold it was those two days, maybe a possibility? I know my 80 has a slight leak when the temps drop really low. Old rubber I guess.
'97 lx450, 170k, factory lockers, ome 850/863, 285's, 4 working doors(1 more than the old fj55 )
'74 project pig (sold