Expedition | 2022-2024 | King Ranch, Limited, Max King Ranch, Max Limited, Max Platinum, Max SSV, Max XL, Max XLT, Platinum, SSV, Timberline, XL, XL STX, XLT | 6 Cyl 3.5 L FLEX, 6 Cyl 3.5 L GAS
Q: How to service and repair the rear dual catalytic converter on Ford Explorer?
A: Starting repair and servicing of the rear dual catalytic converter requires muffler removal as the first step. Remove first the four (A) bolts and (B) nuts from the system. You should first discard the two exhaust converter outlet gaskets along with the three-way catalytic converter (TWC). Implementation of the new TWCs requires new gaskets to be installed before the removal steps are followed in reverse fashion for assembly.
Q: How to service the catalytic converter on a 4.0L engine on Ford Mustang?
A: Beginning the service of a 4.0L catalytic converter requires first positioning the vehicle on a hoist in NEUTRAL mode with additional support provided to the muffler using a jack stand. The exhaust coupler should be unfastened so you can disconnect the intermediate pipe from the catalytic converter assembly with the exhaust coupler thrown away. Users should disconnect all heated oxygen sensors (HO2S) and catalyst monitor sensors at their wiring connectors to avoid any damage. Place new right-hand (RH) catalytic converter-to-exhaust manifold nuts before applying torque to 45 Nm (33 ft.lbs.) while tightening from the upper to lower nut in 10 Nm (89 inch.lbs.) intervals. The procedure should be repeated for the two left-hand (LH) catalytic converter-to-exhaust manifold nuts. The assembly removal requires strict caution to prevent damages in the manifold outlet flare and converter inlet flare and exhaust studs. Scrub the mating surfaces of the manifold outlet flare together with the catalytic converter inlet flare and the muffler inlet pipe with a Scotch Brite pad yet prevent any foreign objects from entering the catalytic converters. You should position the catalytic converter near the rear outlet by placing a jack stand under it to install the component correctly so the manifold studs match with the pipe flange and both hanger rods settle properly in their isolators. After removal the installation process should begin by using new converter-to-manifold nuts and an exhaust coupler while following the opposite procedure.
Q: How to service the catalytic converter for 3.0L and 4.0L engines on Ford Ranger?
A: The first step when servicing the catalytic converter for 3.0L and 4.0L engines is to place the vehicle on a hoist with NEUTRAL gear engaged. Begin by removing first the bolts and nuts coupled with gasket from the catalytic converter to muffler and tailpipe assembly and then do the same for the exhaust Y-pipe flange to catalytic converter connection. Finally remove the catalytic converter itself. Install members of an exhaust system by beginning with front components and complete installation before applying any tightening force. Efficiently clean down the mating surfaces between the exhaust Y-pipe and catalytic converter before checking for damage to these areas and the studs. There should be a cleaning procedure for the catalytic converter mating section and the muffler and tailpipe assembly that excludes damage to any surfaces. Position the exhaust Y-pipe flange-to-catalytic converter flange gasket onto established catalytic converter studs. Insert the catalytic converter into the vehicle while preventing damage to all mating surfaces between exhaust Y-pipe, catalytic converter and muffler and tailpipe as well as the catalytic converter studs before adding exhaust Y-pipe-to-catalytic converter nuts. Put the gasket for the catalytic converter-to-muffler and tailpipe attachment in place before starting construction with the loose installation of its connecting hardware. Finally, align the exhaust system.