I have been messing with this issue for 6 weeks now. the truck stopped running towed it home and have been trying to figure it out ever since. keyswitch on the FPR rattles constantly i checked voltage at terminal 85 86 on the relay and it only have 3.5 v if i jump the ground to the battery - the relay gets a full 12v and the relay pulls in and fuel pump gives me 38 psi at the rail. still won't start though. if i spray ether it will lightly cough but not strong fire. I have 12v at the center wire on the coil packs.
as i understand it the ground for the FPR comes from the computer I have cleaned all the grounds taht i know of but nothing changes. bad computer?? any tests that i can try to narrow it down??
thanks