Removal (3.0L - Lower)
WARNING: This page is about a different car, the 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- Remove upper intake manifold. See REMOVAL & INSTALLATION (3.0L - UPPER) . Drain cooling system. See COOLING SYSTEM DRAINING under COOLING SYSTEMS.
- For right side valve cover removal, disconnect ignition coil connector. Use caution when removing spark plug wires from ignition coil. DO NOT pull on spark plug wire as it may separate from spark plug wire connector inside spark plug boot. Disconnect spark plug wires by twisting while pulling upward from ignition coil. Disconnect heater hose support from stud. Disconnect spark plug wire holders from valve cover studs.
- Disconnect Intake Air Temperature (IAT) and Mass Air Flow (MAF) sensor connectors. Position engine control sensor wiring aside. Disconnect vacuum hoses as necessary. Disconnect wiring harness from valve cover studs. Disconnect crankcase ventilation tube from valve cover. Note location of valve cover bolts and remove 8 valve cover bolts. Remove right side valve cover.
- For left side valve cover removal, disconnect spark plug wire holders from valve cover studs. Disconnect engine control harness from valve cover studs. Note location of valve cover bolts and remove 3 bolts and 5 studded valve cover bolts and remove left side valve cover.
- Disconnect Crankshaft Position (CKP), Engine Coolant Temperature (ECT) and Camshaft Position (CMP) sensor connectors. Disconnect water temperature indicator sender and fuel injector connectors. Disconnect engine control wiring harness and position aside.
- Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEMS. Disconnect fuel line. See FUEL LINE CONNECTORS under FUEL SYSTEMS. Remove 4 bolts retaining fuel injection supply manifold. Remove fuel injection supply manifold and fuel injectors as an assembly.
- Disconnect upper radiator hose and by-pass hose. Loosen bolt retaining cylinder No. 3 intake valve rocker arm. See Fig 1. Remove cylinder No. 3 intake valve push rod. Remove bolts retaining lower intake manifold. Remove lower intake manifold. Remove and discard intake manifold gaskets and end seals.
NOTE:
Both left and right side valve covers must be removed to access lower intake manifold.
NOTE:
Prevent stretching of valve cover gasket by loosening silicone gasket and sealant from cylinder head by sliding a flat knife between valve cover gasket and cylinder head.
NOTE:
Prevent stretching of valve cover gasket by loosening silicone gasket and sealant from cylinder head by sliding a flat knife between valve cover gasket and cylinder head.
NOTE:
When removing lower intake manifold, gently loosen intake manifold to separate silicone sealant from cylinder block.