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.
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Valve Inspection
Remove the valves.
Measure the valve in these areas.
Intake Valve Dimensions
A Standard (New):
27.85пјЌ28.15 mm (1.0965пјЌ1.108 ...
Cylinder Head Inspection for Warpage
Remove the cylinder head.
Inspect the camshaft.
Check the cylinder head for warpage. Measure along the edges, and three
ways across the center:
If wa ...