OEM Mercury Mariner Intake Manifold

Mercury Mariner Intake Manifold Parts and Q&A

• Intake Manifold, Upper
  8L8Z-9424-B
  Q: How to service the intake manifold on Mercury Mariner?

  A:

  Service of the intake manifold starts by placing the vehicle into neutral gear on a hoist system. Start by removing both the Fuel Rail together with the Throttle Body. The first step is to extract both the oil level indicator and tube before unwiring the intake manifold vacuum hose with its pin-type retainer which should then be placed aside. A technician can disconnect the power brake booster vacuum tube through the quick release locking ring after depressing it then pulling the tube off its fitting. Safely remove the fuel vapor return hose from the intake manifold before removing the three accelerator cable bracket bolts that you will place to the side when reinstalling and tightening them to 10 Nm (89 inch lbs.). Detach the wiring connectors of the IAC motor, swirl control valve and Knock Sensor (KS) with its pin-type retainer and temperature manifold absolute pressure (TMAP) sensor and oil pressure sender while ensuring to separate the wiring harness pin-type retainer. The repair requires identifying and marking different bolt sizes which you will need to reinstall properly. Eight bolts must be removed to set the intake manifold aside thus revealing the crankcase vent hose clamp and exhaust gas recirculation (EGR) tube for removal. Disengage the hose clamp before taking out the crankcase vent hose while unscrewing the EGR tube until it reaches 55 Nm (41 ft. lbs.) torque. Last step includes removing the intake manifold with its gaskets then reinstall by following the initial order while inspecting and replacing gaskets when required and tightening bolts to 18 Nm (13 ft. lbs.).
• Intake Manifold
  5L8Z-9424-A
  Q: How to Ensure Proper Functioning of the Intake Manifold on a Mercury Mariner?

  A:

  The first step for servicing the intake manifold requires placing the vehicle in neutral gear position on a hoist. Initiate the procedure by taking off the Fuel Rail and Throttle Body units before disconnecting the oil level indicator together with its attached tube. The power brake booster vacuum tube needs to be removed by pressing the locking ring to unlock it and pulling out the tube from the fitting. The service on the intake manifold begins by disconnecting the fuel vapor return hose from the intake manifold then removing the three bolts which allow positioning of the accelerator cable bracket before securing it with a force of 10 Nm (89 lb-in). The service process requires disconnecting the idle air control (IAC) motor alongside the swirl control valve and both the Knock Sensor (KS) and temperature manifold absolute pressure (TMAP) sensor as well as the engine oil pressure (EOP) switch electrical connectors while removing any pin-type retainers. Record the locations of various bolts because they have distinct dimensions for proper later installation. Access to disconnect both the crankcase vent hose clamp and EGR tube is possible once the intake manifold is secured to its mounting position by removing the eight bolts. When reinstalling the EGR tube you need to fasten it to 55 Nm (41 lb-ft). End the process by taking out the intake manifold and gaskets and follow the reverse order during reinstallation while checking for new intake manifold gaskets before tightening the intake manifold bolts to 18 Nm (13 lb-ft).