RepairPal Certified shops can diagnose and repair your 1999 Ford E-150 Econoline. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Failing fuel pump is suspected .. Fuel pressure test required to confirm! .. Seen it a few times > Low pump pressure won't prime to start but 'will' run engine after manual prime > TEST the fuel pressure first!