had my car in the garage monday got it back today, it was in there because when i went from park to drive it stalled, anyway the bloke could not fix it but cleaned the engine out. that was fine but on the way home each time i breaked there is now a CLUNK noise, im real worried as i have 3 young children and no idea what the proplem could be ?? it wasnt clunking when i left it there??? help please