Q: How to service and repair the catalytic converter on Mercury Cougar?
A: Service operations for the catalytic converter start with removing heat shields then disconnecting the Three Way Catalytic Converter (TWC) from its position on the manifold. After raising the vehicle for support you must disconnect the heated oxygen sensor electrical connector through wire unclipping. The technician should start by disconnecting the flange connection and separating the hanger insulator then proceed to eliminate the TWC and flexible pipe assembly by untightening nuts and removing the nut and bolt. During installation position the TWC and flexible pipe assembly and next install the nut and bolt before tightening the bolts. First check the hanger insulators for wear then replace them when needed and apply Myrpol Lubricant D7AZ-19553-AA or equivalent per Ford specification ESE-M99B144-B. Then install the new gasket and nuts before loosely joining the flange assembly while supporting the vehicle in its lowered position. The usage of jointing compound must end before reaching the catalytic converter area followed by proper tightening of the nuts. Begin by reattaching the heat shield to the exhaust system. Then elevate the vehicle once more before securing the nuts while attaching the heated oxygen sensor electrical cable and securing the wiring in place before letting the vehicle drop to the ground.
Q: How to service and repair the catalytic converter on Mercury Mariner?
A: Service and repair procedures on the catalytic converter begin with putting the vehicle into NEUTRAL position and hoisting it up. Rubber deterioration and exhaust hanger insulator bracket separation will occur when using oil or grease-based lubricants on the insulators during operation. The exhaust catalytic converter nuts should be removed first with disposal before tightening each one to 47 Nm (35 ft. lbs.) during installation. You should remove but discard the U-bolt clamp assembly from the muffler then install it with a torque of 47 Nm (35 ft. lbs.). Remove the two resonator nuts first before discarding them while tightening them to 47 Nm (35 ft. lbs.) once installed. The next step requires removal of the exhaust catalytic converter hanger bracket then extraction of the exhaust catalytic converter and muffler assembly sequence. The installation ends by detaching the converter from the muffler and performing reverse-order removal steps for assembly while adding new gaskets.
Q: How to service and repair the catalytic converter on Mercury Grand Marquis?
A: Begin the catalytic converter service by depowering any fire suppression system if it exists to maintain safety. Place the vehicle onto the hoist in NEUTRAL position. It is necessary to switch off power to an air suspension system before any procedure involving hoisting or jacking or towing to stop unexpected air spring inflation or deflation events. The service process requires removing both electrical connectors from the heated oxygen sensor (H02S) and catalyst monitor sensor (CMS). The installer should discard the two catalytic converter-to-exhaust manifold nuts before installation while tightening them to 40 Nm (30 ft. lbs.) at the end. Begin by removing the catalytic converter-to-outlet pipe bolts and flag nuts before taking out the damper then discarding all three items including the bolts and flag nuts. During new catalytic converter installation workers must apply anti-seize lubricant to sensor threads followed by removal of H02S and CMS before tightening the sensors to 41 Nm (30 ft. lbs.). All joint surfaces between the exhaust manifold and outlet pipe and catalytic converter need clean-up before new exhaust system fasteners and gaskets are installed. Wet run all fasteners at first on the front of the vehicle before any tightening occurs. The correct placement of the converter depends on alternately fastening the exhaust manifold nuts to catalytic converter while tightening the bolts connecting the converter to the inlet pipe according to manufacturer specifications. Equipping your vehicle with a fire suppression system needs a repower process following the installation completion.