For 1990-2009 cars

### Removal Procedure

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
2. Remove the exhaust manifold pipe bolts at the exhaust manifolds.
3. Disconnect the electrical connector from the heated oxygen sensor.
4. Remove the heated oxygen sensor from the 3 way catalytic converter.
5. Loosen the muffler clamp bolt at the 3 way catalytic converter.
6. Remove the 3 way catalytic converter from the exhaust muffler.
7. Remove the catalytic converter hanger bolts.
8. Remove the catalytic converter hanger from the 3 way catalytic converter.

### Installation Procedure

1. Install the catalytic converter hanger to the 3 way catalytic converter.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

2. Install the catalytic converter hanger bolts.

Tighten
Tighten the catalytic converter hanger bolts to 41 N·m (30 lb ft).

3. Install the 3 way catalytic converter to the exhaust muffler.
4. Tighten the exhaust muffler clamp bolt at the 3 way catalytic converter.

Tighten
Tighten the exhaust muffler clamp bolt to 68 N·m (50 lb ft).

5. Install the exhaust manifold pipe bolts at the exhaust manifolds.

5.1. | Loosely install the exhaust manifold pipe bolts to the manifolds.

5.2. | Tighten the bolts to specifications alternating back and forth from the right to the left manifold flanges.

Tighten
Tighten the exhaust manifold pipe bolts to 35 N·m (26 lb ft).

6. Install the heated oxygen sensor to the 3 way catalytic converter.

Tighten
Tighten the heated oxygen sensor to 42 N·m (31 lb ft).

7. Connect the heated oxygen sensor electrical connector.
8. Lower the vehicle.