Have a 2003 mazda protege with 140,000 miles. The car started squealing a few years ago when the 1st serpentine belt was replaced. Belts have been replaced, water pump, and the timing chain was replaced and I still have squealing issues. Just recently the ac would go out if set on #2. Then the whole thing went out. Ac clutch was replaced and its still squealing but now smells like something is burning when it's turned on. What do I do next??? It has been charged by a professional also.