Ranger 2WD V6-245 4.0L (1990)
Intake Manifold: Service and Repair
Upper Intake Manifold
Upper Intake Manifold
REMOVAL
1. Disconnect the electrical connectors at the air bypass valve, Throttle Position (TP) sensor and Air Charge Temperature (ACT) sensor.
2. Remove the snow/ice shield to expose the throttle linkage. Remove the throttle cable bracket and disconnect the cable from the ball stud on the
throttle body.
3. Remove the air inlet tube from air cleaner to throttle body.
4. Disconnect the upper intake manifold vacuum connectors.
5. Disconnect the PCV valve from the rocker cover.
6. Disconnect the spark plug wires from the comb at the rear of the manifold.
7. Remove the canister purge line from the fitting in the throttle housing.
8. Remove the bolt retaining the engine oil dipstick tube.
9. Remove the bolt which retains the A/C line at the upper rear of the upper manifold.
10. Remove the six upper intake manifold retaining bolts.
11. Remove the upper intake and throttle body as an assembly from the lower intake and fuel supply manifolds.
INSTALLATION
1. Clean and inspect the mounting faces of the fuel manifold and upper intake manifold.
2. Position a new gasket on the mounting studs.
3. Install the upper intake manifold on the studs.
4. Install six upper intake manifold retaining nuts. Torque to 21-25 Nm (15-18 ft lb).
5. Connect the spark plug wires to the retainer comb at the rear of the intake manifold.
6. Attach the A/C line retainer and automatic transmission vacuum line retainer at the upper intake manifold.
7. Install the canister purge line on the throttle body fitting.