I was driving on the freeway. I accelerated to pass another car and my car died during acceleration. The car will not start. I had to have it towed. I used my Diablo Predator to check for error codes and the number PO320 came up. According to the Predator, this refers to the "Ignitional/Distributor Engine Speed Input Circuit." What does this mean? Is this causing my car's problems? Any help would be appreciated.