540i was stalling in mid drive, now won't start at all, mechanic doesn't know why?
About a month ago, I took my 540i to a mechanic to have the trailing arms fixed. A week later, I'm driving downtown and my car just stalls out (never in my 5 years of ownership has it done that.) Then, it takes several tries to get it to turn over. Eventually it did and I made it home. Took it back to the mechanic, he "put it on the machine" and couldn't find anything wrong. He changed the temperature sensor, and it stopped stalling out in mid drive, but now it won't start at all. For the past week or so, whenever I try to start it, it just churns and churns, but won't turn over, not even with a jump.
My car won't start now. Clearly there's something wrong with it. But the mechanic says he doesn't know what's wrong (WTF?).
Can anyone help me?