Wagoneer L6-242 4.0L VIN L FI (1989)
Intake Manifold: Service and Repair
Removal
NOTE: The intake and exhaust manifolds on the 4.0L engines must be removed and installed together because the two manifolds use a common
gasket at the cylinder head.
REMOVAL
1. Disconnect the battery negative cable.
2. Drain the cooling system. Refer to Cooling System/Service and Repair for the procedure.
3. Remove air cleaner inlet hose from throttle plate assembly.
4. Remove the air cleaner assembly.
5. Remove the throttle cable, cruise control cable (if equipped) and the transmission line pressure cable.
Fig. 16 Vacuum Connector Removal
6. Disconnect the vacuum connector on the intake manifold Fig. 16.
a
Lift vacuum connector from the bracket on the intake manifold.
b
Depress lock tabs and pull the vacuum connector
7. Disconnect all electrical connectors on the intake manifold.
8. Disconnect and remove the fuel supply and return lines-from the fuel rail assembly.
9. Loosen the serpentine drive belt tensioner.
10. Remove the power steering pump and bracket from the intake manifold and set aside.
11. Remove the fuel rail and injectors.
12. Remove the intake manifold heat shield.
13. Raise the vehicle on a side mounted swing arm hoist.
Fig. 17 Exhaust Downpipe-to-Exhaust Manifold Nuts