Search for how to paint car with roller and rust oleum. You can do it in a day or two and it comes out amazing. Obviously , you have to sand edges where clear coat is peeling. It costs less than $50 and is easy with no special tools.

To be better able to answer tell us more. When engine is idling out of gear and then in gear does the noise change if you turn steering wheel either direction? (might indicate power steering pump noise) When out of gear and engine running at idle does turning on headlights make noise louder or quiet...