can i sue a mechanic for misdiagnosing a car repair and causing more issue then orginally that was there

my car has been back and forth to the mechanic for the past month and a half for the same issue and every time i bring it to him he replaces something. I ask for a price before he does the repair and he doesnt give me one he just says i have to do the repair first then figure out the numbers. I tried finding another mechanic but no one will touch the car because of another mechanics mistakes. I paid the mechanic 450.00 for the first job he did but after it ended back at the shop i stopped paying because he screwed something up. I made an arrangement to pay 50.00 a week.