hello, i'm a newbie and and hoping someone can help with a stalling problem i have. I have a 2002 3.3 v6 grand voyager that is constantly stalling. I start the car and 30 seconds later it stalls on me. the only code on the dash is p1684 and the alternator is charging at 13.75 to 13.88 volts. has anyone encountered this problem before? do you think changing the camshaft sensor is a good idea?

 

additional. the rev counter also stays at 750 r.p.m. for approx 15 seconds after the car has stalled.