OEM Mercury Montego Catalytic Converter

Mercury Montego Catalytic Converter Parts and Q&A

• Catalytic Converter, Front Driver Side
  7G1Z-5E213-A
  Q: What are the key steps and precautions to take when servicing the catalytic converter on Mercury Montego?

  A:

  Service the catalytic converter only when the exhaust system reaches room temperature especially around the three-way catalytic converter area. Use only lubricants that do not contain oil or grease components on the isolators because they deteriorate the rubber material and can cause them to separate during vehicle use. Replacement exhaust assembly should use new fasteners which carry the same part number as the original components while keeping to torque specifications for secure components retention. Start the procedure by taking away the front exhaust manifold heat shield while you should discard the front catalytic converter bolts before tightening them to 40 Nm (30 ft. lbs.) during installation. After neutralizing the drive system and placing a jack stand under the Muffler and resonator assembly to offer support the technician should remove the bolts holding the Y-pipe and underbody catalytic converter then tighten the fresh hardware to 40 Nm (30 ft. lbs.) specification when reinstalling. After inspecting the isolators replace them if needed then disconnect the resonator isolator while loosening its Torca (R) clamp before final tightening to 47 Nm (35 ft. lbs.). Grasp the catalytic converter gently to protect its valuable catalyst substance and remove the underbody catalytic converter after discarding the gasket. Apply this procedure to the muffler front and rear isolators by taking off the combined muffler and resonator assembly. Using a jack stand support the Y-pipe assembly and proceed to remove and discard each front and rear catalytic converter nut while tightening them to 40 Nm (30 ft. lbs.) with attention to keeping the exhaust flanges parallel. You should disconnect the Y-pipe isolator and front catalyst monitor sensor electrical connector before removing the front catalytic converter bracket bolt that needs to be tightened to 40 Nm (30 ft. lbs.) when installed. Discard the upper gasket after removing the front catalytic converter while you should inspect the catalytic converter bracket clamp before possibly replacing it and tightening the clamp bolt to 40 Nm (30 ft. lbs.). Before mounting the catalyst monitor sensor, apply anti-seize lubricant to its threads. The same process applies for the new catalytic converter installation where the catalyst monitor needs removal while tightening it to 47 Nm (35 ft. lbs.). Disconnect the electrical connector of the rear catalyst monitor sensor before removing and discarding the rear catalytic converter bolts then tighten new bolts to 40 Nm (30 ft. lbs.) during installation. The procedure includes removal of the rear catalytic converter followed by disposal of its upper gasket while applying anti-seize lubricant to the catalyst monitor sensor threads before installation. Additionally, removing the catalyst monitor before new converter installation requires tightening it to 47 Nm (35 ft. lbs.). The Y-pipe isolator bracket bolts along with the muffler rear isolator bracket bolts need removal when required for installation. Reseating these bolts requires torque of 30 Nm (22 ft. lbs.). Reverse the disassembly steps to install while cleaning exhaust system mating surfaces together with using new exhaust gaskets and fasteners.