Catalytic Converter: Removal

WARNING: This page is about a different car, the 2018 Ford Focus. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Before beginning any service procedure in this article, refer to Safety Warnings in GENERAL INFORMATION (EXCEPT ELECTRIC) . Failure to follow this instruction may result in serious personal injury.

Refer to: Health and Safety Precautions .
With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
Remove the engine appearance cover.

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Detach the wiring harness retainers and disconnect the HO2S and catalyst monitor sensor electrical connectors.

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Remove the bolts and the heat shield.
Torque

: 89 lb.in (10 Nm)

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NOTE: Failure to tighten the catalytic converter manifold nuts to specification a second time may cause the converter to develop an exhaust leak.

NOTE: Discard the nuts.

NOTE: Always install new fasteners and gaskets as indicated. Clean flange faces prior to new gasket installation to make sure of proper sealing.

During installation, install 5 new catalytic converter manifold-to-cylinder head nuts and tighten in 2 stages in the sequence shown. Remove the exhaust manifold nuts.

Torque

: 41 lb.ft (55 Nm)
Torque
: 41 lb.ft (55 Nm)

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Remove the front subframe. Refer to: Front Subframe .
NOTE: Failure to tighten the catalytic converter manifold-to-muffler and tailpipe nuts to specification in this sequence may cause the catalytic converter manifold-to-muffler and tailpipe flange to develop an exhaust leak.

NOTE: Always install new fasteners and gaskets as indicated. Clean flange faces prior to new gasket installation to make sure of proper sealing.
- During installation, install 2 new catalytic converter manifold-to-muffler and tailpipe nuts and tighten in 2 stages in the sequence shown. Remove and discard the nuts and gasket.
  Torque
  
  : 35 lb.ft (48 Nm)
- Position back the exhaust system.
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Remove the bolts for the exhaust manifold.
Torque

: 18 lb.ft (25 Nm)

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Remove and discard the exhaust manifold gasket and the exhaust manifold studs.
Torque

: 150 lb.in (17 Nm)

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