OBS Fords, done right.
92–97 F-150 / F-250 / F-350 / Bronco. Every spec, decoded. Every number sourced. Print it, take it to the garage.
Built on a question ledger of 434,595 real forum thread titles (BroncoZone, FullSizeBronco, OilBurners, Ford-Trucks.com) and 8,574 NHTSA complaints — the problems here are the problems owners actually hit.
Top problems (by real demand)
10,960 threads across the four big forums. The TTB front end has a handful of classic failure points — here's the order to check.
TransmissionE4OD Transmission Problems — Won't Shift, OD Light Flashing, FluidThe most-asked transmission question in the OBS world. Here's the 3-second answer and where to start.
BrakesOBS Brake Problems — Soft Pedal, RABS Light, Pulling, Torque SpecsBiggest failure signal in the complaint data (4,323 NHTSA complaints). RABS light ≠ broken ABS pump — usually it's the sensor or module.
FuelOBS Fuel Pump Replacement — Location, Pressure, Dual Tanks, No-StartIn-tank electric pumps die without warning. Here's where they live, how to test, and the dual-tank gotcha that fools everyone.
EngineOBS Ford Firing Order — 4.9, 5.0, 5.8, 7.5 (and the 5.0 vs 5.8 trap)The most-searched spec on the internet for these trucks. Print this page.
EngineEEC-IV Diagnostic Codes — KOEO/KOER List for OBS Ford (92-96)The codes are free to pull and 90% of check-engine mysteries are a code read away. Print this page.
How this works
This is a read-only spec library with a correction button on every value. Numbers come from community-standard sources now; each is being verified against factory literature. Trust is the product — see About.