Hey new to this I have a 01 4.6 f150. No matter what we try we can't get it to start and run on its own. First what we've tried.....new fuel pump and filters. New camshaft and crankshaft sensors. Pulled out injectors and they are open. Also have put in a new pcm. With the old pcm the fuel pump wouldn't shut off and with the new one it won't run. But when we jump across and do get the fuel pump going it still won't start. I'm unable to tell if the injectors are opening and closing even with a stethoscope. But not getting any pulses to injectors. Is this that damn PATS or something else?