In winter 2013 my car Dodge Caliber sxt 2007 didn't start. It was diagnosed that that there was a problem with a fuse box. The fuse box was replaced. While being replaced the throttle control went wrong. Afterwards the later was also replaced. For 5 minutes the car had worked perfectly but then the accelerator pedal stopped reacting (working). So my mechanic is puzzled and can't diagnose the problem. Could you help me?