Exhaust manifold — removal and installation
Removal
1. Disconnect the cable from the negative terminal of the battery (see Engine electrical systems).
2. Raise the front of the vehicle and support it securely on jack stands.
3. Remove the lower splash shields.
Note: The exhaust manifold and the catalytic converter are one unit.
4. Disconnect the oxygen sensor electrical connectors and remove the sensors (see Emissions and engine control systems).
5. Remove the EGR pipe mounting bolts and EGR pipe (see Emissions and engine control systems).
6. Detach the exhaust pipe from the catalytic converter/exhaust manifold. Apply penetrating oil to the fastener threads if they are difficult to remove.
7. Remove the heat shield mounting bolts and shield (see illustration). Be sure to soak the bolts and nuts with penetrating oil before attempting to remove them.
i.7 Heat shield mounting bolts
8. Remove the lower support bracket mounting bolts, if equipped.
9. Remove the exhaust manifold/catalytic converter nuts and bolts (see illustration) and detach the manifold/converter from the cylinder head.
i.9 Location of the exhaust manifold mounting nuts and bolts
Installation
10. Discard the old gaskets and use a scraper to clean the gasket mating surfaces, then wipe the surfaces with a rag soaked in brake system cleaner.
11. Place the manifold/converter in position on the cylinder head and install the nuts and bolts. Tighten the nuts and bolts to the torque listed in this Chapter’s Specifications.
12. Install the heat shield(s) and tighten the bolts securely.
13. Install the EGR tube using new gaskets and tighten the bolts securely, if equipped.
14. Connect the exhaust pipe to the converter, using new bolts. Tighten the bolts to the torque listed in this Chapter’s Specifications.
15. The remainder of installation is the reverse of removal.
16. Reconnect the battery (see Engine electrical systems).
17. Start the engine and check for exhaust leaks at the cylinder head and the exhaust
pipe.