I have noticed a popping noise in my 1986 5.0 LX when I turn the wheel when i am moving forward at about 2 mph or when i am rolling in reverse. It only happens once when i start the car after it has been sitting for a while. The noise sounds like it is coming from the front passengers side. I had new tires put on it last november. I also had the ball joints replaced, the car aligned, the sway bar link bushings replaced, and new shocks and struts installed all last year. But i did not have any problems since then. i cant seem to figure out the problem. Please help. Thanks.