RAM 1500 Truck 2WD V6-3.9L VIN X (1999)
Intake Manifold: Service and Repair
Intake Manifold Replacement
REMOVAL
1. Disconnect the negative cable from the battery.
2. Drain the cooling system.
3. Remove the generator.
4. Remove the air cleaner.
5. Perform the Fuel Pressure Release procedure. Disconnect the fuel lines.
6. Disconnect the accelerator linkage and if so equipped, the speed control and transmission kickdown cables.
7. Remove the return spring.
8. Remove the distributor cap and wires.
9. Disconnect the coil wires.
10. Disconnect the heat indicator sending unit wire.
11. Disconnect the heater hoses and bypass hose.
12. Remove the closed crankcase ventilation and evaporation control systems.
13. Remove intake manifold bolts.
14. Lift the intake manifold and throttle body out of the engine compartment as an assembly.
15. Remove and discard the flange side gaskets and the front and rear cross over gaskets.
Throttle Body Assembly
16. Remove the throttle body bolts and lift the throttle body off the intake manifold. Discard the gasket.
17. Remove the plenum pan as follows:
a. Turn the intake manifold upside down. Support the manifold.
b. Remove the bolts and lift the pan off the manifold. Discard the gasket.
INSTALLATION
1. Install the plenum pan, if removed, as follows:
a. Turn the intake manifold upside down. Support the manifold.
b. Place a new plenum pan gasket onto the seal rail of the intake manifold. Position the pan over the gasket. Align all the gasket and pan holes
with the intake manifold.
c. Hand start all bolts.
