HELP!!!!!!!!! My '91 VDP is throwing a fault of "PAO Fail".
This code is not any any of my service or shop manuals and
the local dealer has never seen it. Does anyone know what
this is????????

Engine: 4.0 L6
Tranny: J-Gate
Symtoms: Good spark; good fuel-rail pressure; injectors not
opening. (Will start with starter fluid sprayed
in TB.)