I have 2001 ram 1500 with a 5.8, the tach stopped working and now the transmission doesnt seem to know what gear it wants to be in , and it also runs very eratic, idling really low, skipping, generally doing what ever it feels like at the time, it ran fine before the tach quit, it also has a new (transmission and ecm) 3 or4 thousand miles ago, any suggestions on where to start wouls be greatly apreciated thx dale