OEM 2006 Jeep Liberty Catalytic Converter

2006 Jeep Liberty Catalytic Converter Parts and Q&A

• Q: How to Remove and Install a Catalytic Converter on a 3.7L Engine on 2006 Jeep Liberty?

  A: Before trying to remove the catalytic converter from a 3.7L engine, raise the vehicle, saturate the nuts and bolts with a heat valve lubricant and wait for 5 minutes. Unplug the electrical cord to the oxygen sensor, remove the nuts from the front pipes, take off the flanged nuts at the exhaust to catalytic converter assembly and unbolt and remove the flanged nuts at the manifold. Lower the front exhaust pipe/catalytic converter assembly and take it out of the mount if there's one at the transmission and remove the whole assembly from the vehicle. Look over the stainless steel part of the converter to check for warping brought on by high heat and make sure that the heat shield showing signs of damage. A damaged core may be signaled by tapping the catalyst's bottom with a rubber mallet. Place the front exhaust pipe and catalytic converter assembly into the mount at the transmission and onto the exhaust manifold flange and then fit the nuts onto the muffler flange without tightening them. Leave at least 1.0 inch between the exhaust parts and the frame, then tighten the exhaust manifold bolt to a torque of 19 inch lbs. and the nuts attaching the front exhaust to the muffler to a torque of 19 ft lbs. Attach the front pipe to the exhaust manifold flange and tighten the clamp to 10 Nm (95 inch lbs.). Connect the oxygen sensor wiring, lower the machine and start it up to look for exhaust leaks, fixing anything that needs repair. Also, examine the frame for any contact with the exhaust system and make changes whenever needed.