Durango 4WD V8-4.7L VIN P Flex Fuel (2007)
Catalytic Converter: Service and Repair
Removal
Inspection
INSPECTION
Look at the stainless steel body of the converter, inspect for bulging or other distortion that could be a result of overheating. If the converter has a heat
shield attached make sure it is not bent or loose.
If you suspect internal damage to the catalyst, tapping the bottom of the catalyst with a rubber mallet may indicate a damaged core.
3.7L/4.7L Engine
3.7L/4.7L ENGINE
CAUTION: When servicing or replacing exhaust system components, disconnect the oxygen sensor connector(s). Allowing the exhaust to hang
by the oxygen sensor wires will damage the harness and/or sensor.
1. Raise and support the vehicle.
2. Saturate all exhaust bolts and nuts with Mopar(R) Rust Penetrant. Allow 5 minutes for penetration.
3. DIsconnect the oxygen senor electrical connectors.
4. Remove the catalytic converter-to-manifold bolts (5).
5. Remove the clamp (1) holding the catalytic converter (3) to the exhaust pipe(s) (2).
6. If present, grind tack weld.
7. Remove the clamp holding the catalytic converter flange to the muffler or extension pipe.
8. Remove the catalytic converter. You may have to loosen up other sections of the exhaust system.
