I bought a 2006 crossfire with 103,000 miles and it has two issues I can not figure out. The first is it hesitates when you start out. I changed the plugs and fuel filter, what else could be wrong with it. Also the radio comes on when you start the car and it stays in low volume and wont shout off or is not changeable. is it in safe mode and if so what can I do to reactivate it.?

Gary