This happens when the car is first started, then when I put it in reverse and then in drive, and when I turn, but only until the car is warmed up. I took it in the other day, but of course by then it was warmed up and wouldn't make that noise! The mechanic oiled/greased everything he could think of and said I might need a new alternator. I trust him, but I don't want to spend that kind of money! We will if we have to. We need this car to keep running for another 100,000 miles if possible. It has 114,000. We just had to replace our old car with 240,000 miles. We haven't even started the payments yet on the new one, and we sure can't afford another! Any ideas?