Altima 2.5 SL L4-2.5L (QR25DE) (2002)
Exhaust Manifold: Service and Repair
REMOVAL
1. Remove engine under cover, with power tool.
2. Disconnect the electrical connector of each heated oxygen sensor, and unhook the harness from the bracket and middle clamp on the cover.
3. Remove the heated oxygen sensors with Tool.
CAUTION:
^
Be careful not to damage heated oxygen sensor.
^
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7 inch) onto a hard surface such as a concrete
floor; use a new one.
4. Remove the lower exhaust manifold cover.
5. Remove the exhaust front tube.
6. Remove the upper exhaust manifold cover.