Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1990 Ford Bronco II RWD, Standard, M5OD-R1FACTORY OEM SERVICE PROCEDURE
Torque Specifications
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) | |
|---|---|---|
| Air Intake Throttle Body | ||
| 2.3L | 15-22 (20-30) | |
| 2.9L & 4.0L | 6-9 (8-12) | |
| 3.0L | 19 (25) | |
| 4.9L, 5.0L, 5.8L & 7.5L | 12-18 (16-24) | |
| EGR Tube-to-EGR Valve | ||
| 2.3L & 2.9L | 18-28 (24-38) | |
| 4.9L & 5.0L | 25-35 (34-47) | |
| Fuel Supply Manifold Bolts | ||
| 2.3L | 15-22 (20-30) | |
| 4.0L | 7-10 (10-14) | |
| 4.9L & 5.0L | 12-15 (16-20) | |
| Injection Line Fittings (Diesel) | 22 (30) | |
| Injection Pump Gear Cover Bolts (Diesel) | 14 (19) | |
| Injection Pump Gear Mounting Bolts | 25 (34) | |
| Thermostat Housing Bolts (Diesel) | 20 (27) | |
| Upper Intake Manifold Bolts | ||
| Except 2.9L & 4.0L | 15-22 (20-30) | |
| 2.9L | 11-15 (15-20) | |
| 4.0L | 15-18 (20-25) | |
| INCH Lbs. (N.m) | ||
| Air Intake Throttle Body (2.9L, 4.0L & 7.5L) | 72-96 (8-11) | |
| Fuel Pressure Regulator | ||
| Except 2.9L & 4.0L | 26-40 (3-4.5) | |
| 2.9L & 4.0L | 72-96 (8-11) | |
| Fuel Supply Manifold Bolts (2.9L & 3.0L) | 72-96 (8-11) | |
| Pressure Relief Valve Cap | 4-6 (.5-.7) | |
| Thermostat Housing Bolts (Except Diesel) | 72-96 (8-11) | |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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