For 1990-2009 cars

## Exhaust Manifold Replacement Left

### Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
4. Disconnect the secondary lock on the electrical connector.
5. Disconnect the wiring harness connector (1) from the oxygen sensor.
6. Remove the oxygen sensor connector from the spark plug wire harness bracket.
7. Remove the oxygen sensor from the exhaust manifold.
8. Disconnect the numbers 1, 3 and 5 spark plug wires from the spark plugs.
9. Remove the numbers 3 and 5 spark plugs from the cylinder head.
10. Remove the two rear exhaust manifold studs and nut from the exhaust manifold.
11. Lower the vehicle.
12. Remove the number 1 spark plug from the cylinder head.
13. Remove the exhaust manifold heat shield nuts.
14. Remove the exhaust manifold heat shields from the exhaust manifold.
15. Remove the exhaust manifold studs and nut from the exhaust manifold.
16. Remove the exhaust manifold and gasket from the cylinder head.
17. Remove the heat shield studs from the exhaust manifold, if necessary.

### Installation Procedure

1. Install the heat shield studs to the exhaust manifold, if necessary.
2. Install the exhaust manifold gasket and manifold to the cylinder head studs.
3. Install the front two exhaust manifold studs and nut to the exhaust manifold.

Tighten

• | Tighten the two front exhaust manifold studs to 15 N·m (11 lb ft).

• | Tighten the exhaust manifold nut to 18 N·m (13 lb ft).

4. Install the exhaust manifold heat shields to the exhaust manifold.
5. Install the exhaust manifold heat shield nuts.

Tighten
Tighten the exhaust manifold heat shield nuts to 10 N·m (89 lb in).

6. Install the number 1 spark plug to the cylinder head.

Tighten
Tighten the number 1 spark plug to 27 N·m (20 lb ft).

7. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
8. Install the two rear exhaust manifold studs and nut to the exhaust manifold.

Tighten

• | Tighten the two rear exhaust manifold studs to 15 N·m (11 lb ft).

• | Tighten the exhaust manifold nut to 18 N·m (13 lb ft).

9. Install the numbers 3 and 5 spark plugs to the cylinder head.

Tighten
Tighten the numbers 3 and 5 spark plugs to 27 N·m (20 lb ft).

10. Connect the numbers 1, 3 and 5 spark plug wires to the spark plugs.
11. Install the oxygen sensor to the exhaust manifold.

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

12. Install the oxygen sensor connector to the spark plug wire harness bracket.
13. Connect the wire harness connector (1) to the oxygen sensor connector.
14. Connect the secondary lock on the electrical connector.
15. Install the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
16. Lower the vehicle.
17. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.

## Exhaust Manifold Replacement Right

### Removal Procedure

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
3. Remove the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
4. Disconnect the secondary lock on the electrical connector.
5. Disconnect the oxygen sensor electrical connector (3) from the harness.
6. Remove the oxygen sensor connector rosebud from the engine lift bracket.
7. Remove the oxygen sensor from the exhaust manifold.
8. Disconnect the numbers 4 and 6 spark plug wires from the spark plugs.
9. Remove the number 6 spark plug from the cylinder head.
10. Remove the two rear exhaust manifold studs and nut from the exhaust manifold.
11. Lower the vehicle.
12. Disconnect the number 2 spark plug wire from the spark plug.
13. Remove the numbers 2 and 4 spark plugs from the cylinder head.
14. Remove the exhaust manifold heat shield nuts.
15. Remove the exhaust manifold heat shields from the exhaust manifold.
16. Remove the two front exhaust manifold studs and nut from the exhaust manifold.
17. Remove the right exhaust manifold and gasket from the cylinder head.
18. Remove the heat shield studs from the exhaust manifold, if necessary.

### Installation Procedure

1. Install the heat shield stud to the exhaust manifold, if necessary.
2. Install the right exhaust manifold gasket and manifold to the cylinder head studs.
3. Install the two front exhaust manifold studs and nuts to the exhaust manifold.

Tighten

• | Tighten the two front exhaust manifold studs to 15 N·m (11 lb ft).

• | Tighten the exhaust manifold nuts to 18 N·m (13 lb ft).

4. Install the exhaust manifold heat shields to the exhaust manifold.
5. Install the exhaust manifold heat shield nut.

Tighten
Tighten the exhaust manifold heat shield nuts to 10 N·m (89 lb in).

6. Install the numbers 2 and 4 spark plugs to the cylinder head.

Tighten
Tighten the numbers 2 and 4 spark plugs to 27 N·m (20 lb ft).

7. Connect the number 2 spark plug wire to the spark plug.
8. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
9. Install the two rear exhaust manifold studs and nut to the exhaust manifold.

Tighten

• | Tighten the two rear exhaust manifold studs to 15 N·m (11 lb ft).

• | Tighten the exhaust manifold nut to 18 N·m (13 lb ft).

10. Install the number 6 spark plug to the cylinder head.

Tighten
Tighten the number 6 spark plug to 27 N·m (20 lb ft).

11. Connect the numbers 4 and 6 spark plug wires to the spark plugs.
12. Install the oxygen sensor to the exhaust manifold.

Tighten
Tighten the exhaust manifold to 42 N·m (31 lb ft).

13. Connect the oxygen sensor electrical connector rosebud to the engine lift bracket.
14. Connect the oxygen sensor electrical connector (3) to the wiring harness.
15. Connect the secondary lock on the electrical connector.
16. Install the 3-way catalytic converter. Refer to Catalytic Converter Replacement in Engine Exhaust.
17. Lower the vehicle.
18. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.