I recently installed a new head unit into my 04 mach 1 about a month ago. Ever since then my car has been acting strange. It will idle at around 1300 rpms and drop way down to 200 rpms and sometimes just turn all the way off, also while i am accelerating the car is hesitant and feels as if the whole engines timing is off. I dont know if it is coincidence that these problems started right after i put the new radio in or not, all I know is it was running like a dream before and now its not. I was just wondering what some of the causes could be for this problem or if it is indeed related to the head unit instillation.