NOTE: Continental, Crown Victoria/Grand Marquis, Mustang and Town Car (4.6L), Taurus/Sable (3.0L 4V) and LS (3.0L and 3.9L) use Coil On Plug (COP). COP faults should set a DTC. For additional testing, see TEST JF: INTEGRATED IGNITION COIL ON PLUG FAILURE in SELF-DIAGNOSTICS - EEC-V (GASOLINE) article.

Spark Check

Perform self diagnostic QUICK TEST to check for ignition-related fault codes, and repair as necessary. See QUICK TEST in SELF-DIAGNOSTICS - EEC-V (GASOLINE) article. If no fault codes are retrieved, check ignition system wiring harness for damage or loose connectors. See WIRING DIAGRAMS article. Clean or repair connectors as necessary.
If wiring and connectors are okay, use Neon Bulb Spark Tester (D8IP-6666-A ) to check for spark at each spark plug while cranking engine. If spark is strong and consistent at each spark plug (one spark per crankshaft revolution), ignition system is okay. If spark is not present, see TEST A: NO-START/VEHICLE WILL NOT START in SELF-DIAGNOSTICS - EEC-V (GASOLINE) article.

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.

Safety Warning

EDIS (DISTRIBUTORLESS)

Use the Manual With the Right Hardware

When to See a Mechanic

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