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 MANUALSJEEP2009COMMANDER LIMITED, 4.7 P, 4WDREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMIGNITION CONTROL (SERVICE INFORMATION)SPARK PLUGREMOVAL3.7L
2009 Jeep Commander Limited, 4.7 P, 4WD
Spark Plug: Removal: 3.7L
2009 Jeep Commander Limited, 4.7 P, 4WDSECTION 3.7L
- Remove the necessary air filter tubing and air intake components at the top of the engine at the throttle body.NOTE: The three spark plugs located on the left bank of the engine are under three individual ignition coils (1). Each individual ignition coil must be removed to gain access to each spark plug located on the left bank of the engine.
- Prior to removing the ignition coil, spray compressed air around the coil base at the cylinder head.
- Remove the ignition coil (1). See Removal . Check the condition of ignition coil O-ring and replace as necessary.
- Prior to removing the spark plug, spray compressed air into the cylinder head opening. This will help prevent foreign material from entering combustion chamber.
- Remove the spark plug from the cylinder head using a quality thin wall socket with a rubber or foam insert.
- Inspect the spark plug condition.
RENDER: 1.0x
NO RELATED
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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.