2002 Dodge Intrepid hard to start

Actually, I doubt it has anything to do with the cam sensor. I feel that the ambient temp sensor may be bad. It tells the computer the outside temp and the coolant temp. From that, the computer determines how rich to make the fuel / air mixture. If it thinks it's really cold, lets say -20 degrees F, it will dump the fuel to the engine. WHen you push the throttle 1/2 way down, it allows more air to get to the engine and therefore it starts.

I have to ask, has the check engine light come on?