Customers need to turn off electrical power to the
Air Suspension system before catalytic converter servicing since unplanned air spring inflation or deflation could make the vehicle shift during operations. Place the vehicle at neutral gear position before setting the automobile on an overhead lifting service. Disconnect both heated oxygen sensor (HO2S) and catalyst monitor sensor (CMS) electrical connector wires. The service begins by taking out catalyst-to-exhaust nuts then removing bolts from the converter-to-outlet pipe segment. Next, extract the flag nuts and damper before removing the converter itself. Discard all removed pieces including the bolts and flag nuts and gasket. The technician should remove both the heated oxygen sensor and catalyst monitor sensor when necessary. Before installing sensors you should apply a minimal layer of anti-seize lubricant to their thread surfaces. When cleaning the mating surfaces between the
Exhaust Manifold and outlet pipe and catalytic converter always use new gaskets and fasteners. Secure the fasteners only once you have finished assembling the components starting with the vehicle front. The converter requires the correct seating by using alternating torque adjustments on the exhaust manifold to catalytic converter nuts together with the catalytic converter to inlet pipe bolts which helps evenly align the converter flanges. The reverse procedures should be used to finish the installation steps.