Mark VIII V8-4.6L DOHC (1996)
Intake Manifold: Service and Repair
1. Disconnect battery ground cable.
2. Drain cooling system.
3. Remove engine appearance cover, air cleaner outlet tube and air intake resonator.
4. Relieve fuel system pressure.
5. Remove wiper module and air inlet tube.
6. Release belt tensioner and remove accessory drive belt.
7. Disconnect ignition plug wires from spark plugs. Do not pull on wires.
8. Disconnect ignition wire brackets from valve cover studs.
9. Disconnect both ignition coils, CID sensor and ignition wires from both coils.
10. Remove ignition wire tray and ignition wire assembly.
11. Disconnect alternator wiring harness from junction block, fender apron and alternator.
12. Disconnect upper radiator hose and water bypass tube to the thermostat hose at the water bypass tube.
13. Disconnect electrical connectors at ECT and engine temperature sending unit at bottom of coolant bypass tube.
14. Remove coolant bypass tube
15. Remove alternator and mounting bracket.
16. Disconnect accelerator cable and speed control actuator from throttle body.
17. Disconnect the following vacuum lines:
a. Chassis vacuum supply hose.
b. Fuel pressure regulator vacuum harness.
c. Righthand and lefthand intake manifold runner controls (IMRC).
d. Intake manifold connection.
e. Crankcase vent.
f.
Throttle body.
g. PCV.
18. Disconnect and remove upper engine wiring harness from intake manifold.
19. Disconnect eight fuel injector connectors.
20. Remove EGR valve.
21. Disconnect IAC and TPS electrical connectors.
