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 MANUALSFORD1991AEROSTAR 2WD V6-183 3.0LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULESERVICE AND REPAIR
1991 Ford Aerostar 2WD V6-183 3.0L
Ignition Control Module: Service and Repair
1991 Ford Aerostar 2WD V6-183 3.0LSECTION Service and Repair
REMOVAL
1. Remove two screws retaining TFI/heatsink assembly to lefthand fender apron.
2. Disconnect harness connector, then remove two screws retaining TFI module to heatsink. Remove TFI module.
INSTALLATION
1. Coat metal base plate of TFI ignition module with 1/32 inch thick layer of silicone grease.
2. Install module on heatsink, then torque two retaining screws to specification.
3. Install TFI/heatsink assembly to lefthand fender apron using two retaining screws.
4. Connect harness connector.
1. Remove two screws retaining TFI/heatsink assembly to lefthand fender apron.
2. Disconnect harness connector, then remove two screws retaining TFI module to heatsink. Remove TFI module.
INSTALLATION
1. Coat metal base plate of TFI ignition module with 1/32 inch thick layer of silicone grease.
2. Install module on heatsink, then torque two retaining screws to specification.
3. Install TFI/heatsink assembly to lefthand fender apron using two retaining screws.
4. Connect harness 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.