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 heated oxygen sensor (HO2S). Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1.
2. Remove the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.
3. Remove the exhaust manifold heat shield bolts (1).
4. Remove the exhaust manifold heat shield.

### Installation Procedure

1. Install the exhaust manifold heat shield.

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. Install the exhaust flexible pipe. Refer to Exhaust Flexible Pipe Replacement.
4. Install the HO2S. Refer to Heated Oxygen Sensor Replacement - Bank 1 Sensor 1.