In servicing the Intake Manifold, you have to start with lifting your vehicle up and thereafter almost securing it. Drain the coolant system and then lower the vehicle. Disconnect the intake air temperature (IAT) sensors connectors from the air intake duct and
Throttle Body and mass air flow (MAF) sensors connectors on the same locations as well. Remove the air intake duct and the air cleaner assembly, then the
Fuel Rail covers. Release the fuel system pressure using the fuel pressure gauge (J 34730-1A), paying particular attention to capping off the fittings and plugging the holes so that the chances of fuel dripping and contamination are eliminated. Remove the fuel line from the Fuel Rail; extract the vacuum ventilation hoses, and pull out the fuel injector wire harness electrical connectors. Also, push off the
Throttle Position Sensor connector and the
Knock Sensor electrical connector. Accessexceptions:.disconnect all remaining electrical connections from Intake Manifold, then remove the Knock Sensor jumper pigtail from Fuel Rail stop bracket. Take off the positive crankcase ventilation (PCV) valve pipe from the left and right-hand valve rocker arm cover plus the pcv tube from the Throttle Body and the right-hand valve rocker arm cover. The Throttle Body heater outlet hose of the engine coolant air bleed hose should be removed from the Throttle Body and then the Intake Manifold would be removed. For removal, return the removal in reverse order including Intake Manifold, throttle body heater outlet hose, engine coolant air bleed hose, and pcv tube. Secure the pcv valve pipe to the right hand valve rocker arm cover, making sure to install the pcv pipe strap nut and tighten the strap nut in 12 nm (106 inch lbs.). Connect the Knock Sensor jumper wire pigtail back to the Fuel Rail stop bracket , the Knock Sensor electrical connector , and the fuel injector wire harness connectors. Finally plug Throttle Position Sensor connector, other remaining electrical connections to Intake Manifold, reinstall fuel line to Fuel Rail, fuel rail covers, air intake duct, air cleaner assembly make sure the iat and maf sensor connectors are properly connected.