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.
2001 Ford ZX2 AutomaticFACTORY OEM SERVICE PROCEDURE
Inertia Fuel Shutoff Switch
WARNING:
DO NOT reset IFS switch until fuel system has been inspected for leaks and repaired if necessary.
- 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 SWITCH LOCATION table.
- To test IFS switch, turn ignition off. Remove IFS switch. Shake IFS switch to force it into tripped position (switch open). Check continuity between appropriate IFS switch terminals. See WIRING DIAGRAMS article. Continuity should not exist. Reset switch and ensure continuity exists between appropriate terminals.
INERTIA FUEL SHUTOFF SWITCH LOCATION
| Application | Location | |
|---|---|---|
| Continental, Sable & Taurus | On Left "B" Pillar | |
| Cougar, Escort, Escort ZX2 & LS | Bottom Of Left "A" Pillar | |
| Crown Victoria, Grand Marquis & Town Car | In Trunk Behind Left Luggage Compartment Lining | |
| Focus | Bottom Of Right "A" Pillar | |
| Mustang | Lower Left Rear Of Trunk | |
Factory Service Tools
Use the Manual With the Right Hardware
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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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