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.
2008 Jeep Compass 2WD L4-2.4LFACTORY OEM SERVICE PROCEDURE
Installation
2.0, 2.4L FWD
DOWNSTREAM OXYGEN SENSOR (1/2)
WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER(S) BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR. FAILURE TO ALLOW ENGINE TO COOL BEFORE REMOVAL MAY RESULT IN PERSONAL INJURY CAUSED BY BURNS.
CAUTION: When Equipped: The oxygen sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.
NOTE: Use an O2S removal tool for this procedure.
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal.DO NOT add any additional anti-seize compound to threads of a new O2S.
1. Install O2 sensor (3) to catalytic converter (2). Tighten to 41 Nm (30 ft. lbs.).
2. Connect O2 sensor pigtail harness connector (1) to engine wiring harness.
3. Connect O2S wire harness mounting clips to engine or body, if equipped.
UPSTREAM OXYGEN SENSOR (1/1)
WARNING: THE EXHAUST MANIFOLD, EXHAUST PIPES AND CATALYTIC CONVERTER(S) BECOME VERY HOT DURING ENGINE OPERATION. ALLOW ENGINE TO COOL BEFORE REMOVING OXYGEN SENSOR. FAILURE TO ALLOW ENGINE TO COOL BEFORE REMOVAL MAY RESULT IN PERSONAL INJURY CAUSED BY BURNS.
CAUTION: When Equipped: The oxygen sensor (O2S) pigtail harness must be clipped and/or bolted back to their original positions on engine or body to prevent mechanical damage to wiring.
NOTE: Use an O2S removal tool for this procedure.
Threads of new oxygen sensors are factory coated with anti-seize compound to aid in removal.DO NOT add any additional anti-seize compound to threads of a new O2S.
1. Install O2 sensor (3) to exhaust pipe (2). Tighten to 41 Nm (30 ft. lbs.).
2. Connect O2 sensor pigtail harness connector (1) to engine wiring harness.
3. Connect O2S wire harness mounting clips to engine or body, if equipped.
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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