I have a 1996 plymouth voyager with appox 122,000 miles on it. The problem is and it recently just started about a day ago and it regards a ticking or loud knocking noise when the car is started up and is in parked or stopped position and is most noticiable. When the car is in motion the loudness fades but you are still able to hear the clicking or knocking noise. Can anyone help me and tell me whats going on. Is anyone familiar with the problem. Is it fixable. And expensive.