Remove the intake manifold chamber.
Disconnect the four ignition coil connectors (A).

Remove the harness holder (B) and the breather hose (C).
Remove the cylinder head cover.

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Secondary HO2S Replacement
Special Tools Required
O2 Sensor Wrench Snap-on S6176 or equivalent, commercially available
Disconnect the secondary HO2S connector (A).
Raise the vehicle on a lift.
...
Connecting Rod Bolt Inspection
Measure the diameter of each connecting rod bolt at point A and point B
with a micrometer.
Calculate the difference in diameter between point A and point B.
Point AпјЌPoi ...