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.
Ignition System - TFI-IV: Description
All EEC-IV controlled engines use the TFI-IV ignition system. The TFI-IV distributor is a gear driven, die cast unit. On models with 3.8L engines, a "closed bowl" distributor is used. The TFI ignition module is mounted on the cowl behind the engine (Continental, Sable & Taurus) or the radiator crossmember (Cougar/Thunderbird). On all others, the TFI ignition module is integrally mounted in the distributor. A Hall Effect stator assembly replaces the coil stator. This distributor does not use conventional centrifugal/vacuum advance mechanisms. See Figure.
The TFI ignition module is contained in molded thermoplastic and is mounted on base of distributor. See Figure. The TFI ignition module used on manual transaxle equipped vehicles features a push start mode. This feature allows vehicle to be push started if necessary. An "E" core ignition coil is used.
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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.