For 1990-2009 cars

### Removal Procedure

Warning: Refer to Protective Goggles and Glove Warning in the Preface section.

Warning: Refer to Exhaust Service Warning in the Preface section.

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
2. Disconnect the engine wiring harness electrical connector (2) from the heated oxygen sensor (HO2S) electrical connector (3).
3. Remove the HO2S electrical connector retainer from the engine wiring harness clip (1).
4. Remove the exhaust manifold heat shield bolts (1).
5. Remove the exhaust manifold heat shield, sliding the shield up over the HO2S pigtail.

### Installation Procedure

1. Install the exhaust manifold heat shield, sliding the shield down over the HO2S pigtail.

Caution: Refer to Fastener Caution in the Preface section.

2. Install the exhaust manifold heat shield bolts (1) and tighten to 10 N·m (89 lb in).
3. Connect the engine wiring harness electrical connector (2) to the HO2S electrical connector (3).
4. Install the HO2S electrical connector retainer to the wiring harness clip (1).
5. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.