Mustang V8-4.6L (2009)
Catalytic Converter: Service and Repair
Catalytic Converter
Catalytic Converter - 4.6L, 5.4L
Removal and Installation
1. With the vehicle in NEUTRAL, position it on a hoist.
2. NOTICE: When repairing the exhaust system or removing exhaust components, disconnect all Heated Oxygen Sensor (HO2S) and
Catalyst Monitor Sensor (CMS) at the wiring connectors to prevent damage to the sensors and wiring harnesses.
Disconnect the RH Heated Oxygen Sensor (HO2S) electrical connector.
3. Using a jackstand, support the muffler.
4. Loosen the 2 exhaust couplers and disconnect the intermediate pipes from the catalytic converter assembly. Discard the exhaust couplers.
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To install, tighten to 48 Nm (35 lb-ft).
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Alternately tighten, in 10 Nm (89 lb-in) increments.
5. Disconnect the RH and LH Catalyst Monitor Sensor (CMS) electrical connectors.
6. Using a jackstand, support the catalytic converter.
7. NOTE: Hand-tighten all the catalytic converter nuts.
Remove and discard the 2 RH catalytic converter-to-exhaust manifold nuts.
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To install, tighten to 45 Nm (35 lb-ft).
8. Remove and discard the 2 LH catalytic converter-to-exhaust manifold nuts.
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To install, tighten to 45 Nm (35 lb-ft).
