OEM Mercury Cougar Exhaust Manifold

Mercury Cougar Exhaust Manifold Parts Questions & Experts Answers

• Exhaust Manifold
  F7RZ-9430-AA
  Q: How to service and repair the exhaust manifold on Mercury Cougar?

  A: The service procedure for an exhaust manifold requires removal of heat shielding plus upper bolts and then hose bracket next to the lifting eye. The service begins with removing the coolant hose bracket then follows with the engine lifting eye and engine oil level indicator tube after which comes the coolant hose clamp. The service continues by unfastening the lower bolts. The Heated Oxygen Sensor (H02S) at the wiring harness must be disconnected first to protect both sensors and harness from damage. Detach the exhaust manifold from the Three Way Catalytic Converter (TWC) by removing the HO2S wiring electrical connector first. Loosen the TWC bracket bolt after vehicle support and lowering the TWC will make stud clearance possible for the exhaust manifold. Prior to lower the vehicle remove the four nuts from the exhaust manifold while discarding the exhaust manifold gasket since the engine must be cooled. Plastic manual scrapers serve as the only approved tool for removing gasket material since they will not damage aluminum surfaces during installation. The procedure involves installing an exhaust manifold with a new gasket while reconnecting the TWC to the exhaust manifold before attaching the H02S electrical connector. Support the vehicle while tightening the TWC bracket bolt before returning it to ground position. The installation procedure ends by first installing the heat shield then putting in the oil level indicator tube into the cylinder block followed by positioning both the coolant hose bracket and engine lifting eye before installing the upper and lower bolts and securing the coolant hose bracket.