I have a 95 f350 powerstroke. Im having a problem with no comunication with my scan tool. Ive tried both a otc.genisis & a snapon and no go with either truck starts and runs but cranks a little longer than I think it should, glow plugs are new as well as all gaskets harnesses and relay and they are working correctly. Ived traced the wires from the aldl connector to the ecm. & have continuity & power & ground also to the connector Ive checked all the fuses and am just about at my wits end if anybody has any sugestions Id apreciate it thank Irv