F 150 4WD V8-5.4L VIN V Flex Fuel (2007)
Remove the 2 catalyst monitor sensors.
13. Remove the exhaust Y-pipe-dual catalytic converter hanger bracket and isolator bolts.
14. Remove the RH catalytic converter.
15. Remove the LH catalytic converter.
Installation
CAUTION: Do not tighten the fasteners until all components are assembled and aligned, making sure to tighten all fasteners beginning at the front of
the vehicle.
NOTE: Clean the mating surfaces of the manifold outlet flare and the catalytic converter inlet flare.
Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
All engines
1. NOTE: Use caution installing the catalytic converter. Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
Position the RH catalytic converter.
4.6L and 5.4L engines
2. NOTE: Make sure to apply anti-seize lubricant to the threads of the sensors before installation.
NOTE: A special tool is available for use in installing the HO2S. An open-end wrench can be used for ease of installation.
Install the RH HO2S sensors.
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Tighten to 40 Nm (30 ft. lbs.).
All engines
3. NOTE: Make sure to apply anti-seize lubricant to the threads of the sensors before installation.
NOTE: A special tool is available for use in installing the catalyst monitor sensor. An open-end wrench can be used for ease of installation.
Install the RH catalyst monitor.
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Tighten to 40 Nm (30 ft. lbs.).
4. Loosely install the exhaust Y-pipe-dual catalytic converter hanger bracket and isolator and RH exhaust Y-pipe-dual catalytic converter hanger
bracket and isolator bolt. Let the LH side of the exhaust Y-pipe-dual catalytic converter hanger bracket and isolator hang down.
4.6L and 5.4L engines
5. Connect the RH HO2S sensor electrical connector.
All engines
6. NOTE: Use caution installing the catalytic converter. Make sure not to damage the manifold outlet flare, the converter inlet flare or the studs.
Using an abrasive pad, clean the exhaust clamp surface area of any surface rust.
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Position the LH catalytic converter and loosely install the exhaust manifold nuts.
