Noises During Shifting problems of the 1997 Ford Explorer Sport

The contact owns a 1997 Ford Explorer Sport. While driving approximately 45 mph she heard a ticking noise. She was unable to identify where the noise was located. She stated that no warning lights illuminated on the dashboard of the vehicle. She continued to drive home and parked the vehicle. Two hours later she started the vehicle, shifted into reverse and it continued to make a noise. The contact stated that when the vehicle started the noise was not there but as soon as she shifted the vehicle into reverse, neutral or any gear the noise began again. The vehicle was not taken to an authorized dealer or local mechanic. The contact stated that the failure began on September 20, 2010. The vehicle was not repaired. The failure and current mileages were 229,000.