Exhaust System: Service and Repair

Catalyst, Catalyst Covers, Exhaust Manifold, Manifold Covers, HO2 Sensor, Oil Pressure Switch:

Removal and Installation

CAUTION: Always replace exhaust gaskets with new ones when reassembling.
With engine running, check all tube connections for exhaust gas leaks, and entire system for unusual noises.
Check to ensure that mounting brackets and mounting insulators are installed properly and free from undue stress. Improper installation could result in excessive noise or vibration.
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Do not over-torque the oxygen sensor. Doing so may cause damage to the oxygen sensor, resulting in the MIL coming on.