I am in the process of replacing the timing belt on a 1993 Eagle Vision TSI with 3.5L engine, which has the same engine as the Intrepid 3.5L. I changed the belt on this vehicle in 2001, and I had no problems. This time, after aligning the cams between their respective "two timing marks" at crankshaft TDC, I removed the belt with no problem. However, when I began to install the new belt I inadvertently moved the left side cam (viewed from the driver's side), and it jumped CCW about 90 degrees. I was certainly stunned at this development since I am aware that this is an interference engine. Well, I proceeded to turn the cam CW back between the two timing marks, and successfully installed the belt. What is the likelihood that the left cam is not at TDC? Is there a simple way to check for TDC. I certainly will not start the engine until I am sure both cams are at TDC. Thanks for any help or advice.