99 spyder 2.4 engine.. im having a stalling problem.. the car will stall when coming to a stop and some times while on the highway... it just wont go any more and i have to turn off then back on... ive changed the MAF... the MAP sensor... plugs wires.... checked for vacuum leaks.. couldnt find any. only code im getting for my cel is p0446- system vent control malfunction..
any one ever have a problem like this or know what it could be? i guess im going to take it to the dealer if i cant figure this out soon

 

sounds like a bad vaccum line. Or its a bad vent solenoid. But i would bet on a vaccuum line somewhere