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.
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HOMESERVICE MANUALSFORD1992F 150 4WD PICKUP V8-351 5.8LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULESERVICE AND REPAIR
1992 Ford F 150 4WD Pickup V8-351 5.8L
Ignition Control Module: Service and Repair
1992 Ford F 150 4WD Pickup V8-351 5.8LSECTION Service and Repair
Ignition Module:
1. Remove the two Thick Film Ignition (TFI) module/heatsink assembly retaining screws.
2. Disconnect the TFI module electrical connector.
NOTE: To disconnect the module connector, push on the connector where it says PUSH, then slide connector from module.
3. Remove the TFI module/heatsink assembly from the vehicle.
4. Remove the two TFI module retaining screws and separate the module from the heatsink.
5. Clean the mating surfaces, then apply dielectric silicone (Ford D7AZ-19A331-A, or equivalent) to the ignition module base.
6. Place the module in the heatsink assembly, then install and tighten the retaining screws to 15-35 in lb (1.7-4.0 Nm).
7. Install the TFI module/heatsink assembly on the fender and install the retaining screws.
8. Connect the TFI module electrical connector.
RENDER: 1.0x
NO RELATED
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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.