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.
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HOMESERVICE MANUALSMERCURY2000MYSTIQUE GS, 2.0 3, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURESIGNITION CHECKSEDIS (DISTRIBUTORLESS)
2000 Mercury Mystique GS, 2.0 3, Automatic
EDIS (DISTRIBUTORLESS)
2000 Mercury Mystique GS, 2.0 3, AutomaticSECTION EDIS (DISTRIBUTORLESS)
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.
RENDER: 1.0x
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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.