My 03 NA/Auto Baja does the same thing as long as the temps are below 0C. Stumbles, won't idle properly, strong smell of unburned gas. I turn off the car, sometimes it dies completely and on restart it's fine. It acts like the injectors are on full bore and it's running on two cylinders. It only happens in cold weather, and only after it's been parked all night. If it was a '68 Dart I'd suspect the choke but fuelies don't have one. It's done that since I bought it almost two years ago. Whatever it is, a restart has cured it every time so far.