OEM 2001 Mercury Grand Marquis Intake Manifold

2001 Mercury Grand Marquis Intake Manifold Parts Questions & Experts Answers

• Q: How to remove the intake manifold on 2001 Mercury Grand Marquis?

  A: A proper intake manifold replacement requires engine cooling system draining followed by disconnecting the battery ground cable. Begin by cutting off the power supply to the air cleaner outlet tube while breaking the fuel line. The first step involves taking off the wiper mounting arm along with the pivot shaft before removing the drive belt. Position the vehicle on a hoist before you disconnect both the Crankshaft Position (CKP) sensor electrical connector and the pin-type retainer from the A/C compressor bracket. Detach the electrical connector that encompasses the A/C compressor along with extraction of the oil bypass filter. You must disconnect the oil pressure sensor electrical connector followed by the Power Steering Pressure (PSP) switch electrical connector then remove the RH catalytic converter assembly. The EGR tube should be disconnected from the exhaust manifold before lowering the vehicle. First disconnect the electrical connector to the differential pressure feedback EGR system before proceeding with removal of the fuel charging wiring connectors from all eight ignition coils and eight fuel injectors. The subsequent operation involves removing the accelerate cable, speed control actuator cable, and throttle return spring until all these components are free of the EGR tube heat shield. Position these items outside of the work area. Keep working by first removing the bolts then the EGR tube heat shield followed by detachment of the Evaporative Emissions (EVAP) return tube and the main chassis vacuum supply line and the EGR valve vacuum supply. You need to disconnect the Positive Crankcase Ventilation (PCV) tube assembly at two points before removing it. Then disconnect the electrical connector from the EGR vacuum regulator solenoid as well as disconnecting the vacuum line from the EVAP canister purge valve. Proceed with removing the generator mounting bracket after disconnecting the generator cable then the electrical connector and the harness pin-type retainer. Proceed by taking off the upper radiator hose followed by disconnecting power from the Idle Air Control (IAC) valve and the Throttle Position (TP) sensor and then removing the heater water hose. The EGR tube nut needs disconnection from the EGR valve and the fuel charging wiring harness pin-type retainer must separate from the crash bracket. The LH heated oxygen sensor along with transmission electrical connectors must be detached from their mounting bracket before the bracket can be removed. You need to disconnect the wiring connectors then separate the transmission harness from the stud before you remove the bracket through its nut and bolt. Unbolt the throttle body before taking out its cables from the crash bracket. First remove the bolt and stud to detach the crash bracket then disconnect the vacuum lines and eliminate the vacuum harness. First remove the ground connector from the right-hand rear stud and also remove the generator harness pin-type retainer from the left-hand front stud. First detach the four studs holding the fuel injection supply manifold along with the injectors while using this assembly as a unit followed by the removal of eight bolts and eight ignition coils. First detach the bolts and water outlet adapter and then disconnect the cooling sensor electrical connector before removing the water thermostat. To complete the procedure one must first remove the fuel charging wiring position retainer from the intake manifold rear before removing the bolts and intake manifold while taking off the manifold gaskets to clean the sealing surfaces.