1986 Merkur XR4Ti AutomaticFACTORY OEM SERVICE PROCEDURE

Thick Film Integrated (TFI) Ignition Module

The TFI ignition module is located on side of distributor. The ECA receives engine timing information from the distributor through the TFI ignition module. The ECA uses this information to control ignition timing and advance. The ECA triggers TFI by using a Spark Output (SPOUT) signal.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.