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 MANUALSFORD1991LTD WAGON V8-302 5.0LREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULESERVICE AND REPAIR
1991 Ford LTD Wagon V8-302 5.0L
Ignition Control Module: Service and Repair
1991 Ford LTD Wagon V8-302 5.0LSECTION Service and Repair
REMOVAL
1. Remove distributor cap and position it and attached wires aside so as not to interfere with work area.
2. Remove TFI-IV harness connector.
3. Remove distributor from engine.
4. Remove TFI-IV module attachment screws.
5. Pull RH side of module down distributor mounting flange and back up to disengage module terminals from connector in distributor base. The module may be pulled toward flange and away from distributor.
INSTALLATION
1. Apply a 1/32 inch coating of silicone grease to metal base of module. Position module on distributor mounting flange.
2. Carefully position module toward distributor bowl and securely engage the 3 distributor connector pins.
3. Install 2 module attaching screws and adjust to specification. Install distributor.
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.