Just picked up an 02 P5. I love it! Maybe a Lil too much. Anyways I paid for the car before I actually saw and drove it and the miles were a little over the claimed numbers. The car and engine have no smoke or problems what so ever which is surprising. I will be doing timing belt water and oil pump on Friday my real question is.... What makes my engine continue to get noisier the more I drive? It sounds kind of "chattery" and idle is very weird. Not like the EGR valve issue but more just like a lopey cam? My goal is to make this a winter project... I can weld and machine anything so the only question I have is based on the described issues should I swap the v6 in or fix the 4 and pick up another junk yard 2.0 motor to completely rebuild over the winter and locate the current issues?