Exhaust Manifold Replacement

Note:
The exhaust manifold and the exhaust manifold inner cover, must be replaced as a set. The inner cover bolt hole pattern is different from the original manifold and not interchangeable. All other parts should be reused.

1. The exhaust manifold cover and engine hanger bracket should already be removed and the O2 sensor wire disconnected and set aside.





2. For clearance, N the vehicle is equipped with A/C, remove the left hand condenser fan. Remove the 3 bolts and unplug the connector.

3. Remove the exhaust pipe and gasket from the exhaust manifold by unscrewing the 3 self-locking nuts and 1 bolt.





4. Remove the O2 sensor from the exhaust manifold using special tool MD998703.

5. Remove the exhaust manifold from the engine by removing the remaining nuts and washers from the cylinder head studs.





6. Verify the new exhaust manifold has an "S" mark on one of its runners as shown.

Note:
Manifolds which do not have an "S" mark should not be used for vehicles affected by this warranty extension.

Transfer the 3 studs on the exhaust outlet side to the new manifold (replace the studs only if damaged). Make certain the short threaded side is screwed into the manifold. Stud length after installation should be 24 mm +/- 1 mm.

7. Install the new exhaust manifold inner cover with 3 bolts. Torque the bolts to 9 to 11 ft.lbs.

8. Re-install the remaining parts in the reverse order of disassembly. Torque the fasteners to specifications listed in the 1990 Eclipse service manual (MSSP-102B-90) page 15-27.





SAMPLE "W" WARRANTY CLAIM:
1990 2.0L DOHC NON-TURBOCHARGED CALIFORNIA ECLIPSE EXHAUST MANIFOLD INSPECTION





SAMPLE "W" WARRANTY CLAIM:
1990 2.0L DOHC NON-TURBOCHARGED CALIFORNIA ECLIPSE EXHAUST MANIFOLD REPLACEMENT