I bought my car about a week ago. When I drive there is a squeaking noise coming from the bottom of the car. The headlight switch does not work properly. The car hood doesn't open properly. It used to ride smoothly and felt light. Now there is a new squeaking noise also coming from the tires when I brake and it feels heavier and slower when I drive. I've driven the car in 4wd before and I know its not in 4wd so please help me target every problem so I can get them fixed one at a time due to financial issues. Thank you.