1994 Ford Probe Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Inertia Fuel Shutoff (Ifs) Switch

  1. If IFS switch is tripped, engine cannot be restarted until switch is manually reset. To reset IFS switch, depress switch button. For IFS switch location, see INERTIA FUEL SHUTOFF (IFS) SWITCH LOCATION table below.
    INERTIA FUEL SHUTOFF (IFS) SWITCH LOCATION

    Application Location
    Escort & Tracer
    Sedan Right Side Of Trunk
    Wagon Behind Access Door In Right Rear Cargo Area
    Probe Right Side Of Trunk
    Tempo & Topaz In Trunk On Left Hinge Support Or Behind Trim Panel
  2. To test inertia switch, turn ignition off. Remove inertia switch. Shake inertia switch to force switch into tripped position (switch open).Measure resistance between appropriate inertia switch terminals. See WIRING DIAGRAMS  . Continuity should be not present between terminals with switch tripped and present when reset.
Factory Service Tools

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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.

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