I think I made a mistake of going with a mobile mechanic to replace a passenger side CV axle. Now that car makes a thump noise like something is lose when I hit a bump in low speed, a harsh and louder shift noise from Reverse to Park and Reverse to Drive and whistling noise when I shut the engine off and briefly when the engine was off. The car shifts fine and drives great on a smooth roadway, but worried about hard shift and the thump noise. The mechanic had a hard time taking out the CV axle and I could hear him hammering away the suspension. I called the mobile mechanic main number and the owner says he will take care of it, but I am not sure. The car has low miles and was in excellent condition.