1997 Ford Explorer Q&A
1997 Ford Explorer Question: Has a popping sound when I back up or put in drive. What is it?
You should have your rear difarenchel looked at - dvigneau
That's what happened to my car and the problem was the rear differential. Please go your mechanic as soon as possible needs to be lubricated it and set some oil on it. Don't wait or it will get worse. - TGKarma21