Yo B,
Welcome!
Is Check Engine Light (CEL) on while engine is running?
It comes on when the electronic engine control system is not working properly. The check engine warning indicator comes on briefly when the ignition switch lock cylinder is turned to ON, and should turn off when the engine starts. If the check engine warning indicator does not come on when the ignition switch lock cylinder is turned to ON or if it comes on while the vehicle is moving, the system is malfunctioning
If the CEL does not light up at all when starting it; then suspect that bulb is burnt-out or loose, socket was damaged by PO or shop, etc. or someone removed it.
Has it been scanned for codes?
If not, get it done for free at local parts store and post any code (s) found.
fyi,
96 Bronco-F-Series Workshop Manual (PARTIAL) via
http://www.diesel-dave.com/vehic/manual/stj/stjleft.htm
Btw, has fuel filter been changed in last 15 months according to Ford's normal maint. Schedule?