i installed a new computer in the 5.4, everything electronically works as it should (cluster, lights, high beams......) but I'm getting absolutely nothing when I try to start the engine. Put the old computer back in and now I get the same results with the old one, changed the starter solenoid fuse/relay and still nothing from the starter. 😡 Any ideas would be appreciated thank you

 

PATS issue, probably need a dealer to assist at this point. Changing the computer and using keys for the old computer likely is causing the issue.