A creak/pop noise while turning may mean that updated steering rack bushing tubes need to be installed.Google+
Car Problem Reports
Ford Mustang Creak/pop noise when turning
Ford Mustang Problem
Suspension & Steerings Affected: 3.8L V6, 4.0L V6, V6
Average Mileage: 95,800 mi (65,000 mi - 127,000 mi)
Visitor, 2010 Ford Mustang, 95,400 mi
When I turn the car to the left, I hear a creaking noise coming from the front. I have a 2010 Ford Mustang GT.