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.
1989 Ford Bronco II RWD, Standard, M5OD-R1FACTORY OEM SERVICE PROCEDURE
Ignition Coil Resistance
NOTE:
Specifications for distributorless ignition systems (DIS and EDIS) are not available from manufacturer. For diagnosis, see DISTRIBUTORLESS IGNITION SYSTEM in the appropriate COMPONENT article in the ENGINE PERFORMANCE section.
V6 TFI-IV IGNITION COIL RESISTANCE
| Application | Primary (Ohms) | Secondary (Ohms) |
|---|---|---|
| All Models | .3-1.0 | 8700-11,500 |
HIGH TENSION WIRE RESISTANCE
| Application | Ohms |
|---|---|
| DIS | 7000 Per Foot |
| EDIS | 30,000 Per Wire |
| TFI-IV | 700 Per Foot |
Factory Service Tools
Use the Manual With the Right Hardware
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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.