Dodge Nitro. Manual - part 137

Fig. 277: PCV Hose, Purge Hose, Brake Booster Hose, Throttle Bracket & Electronic Throttle
Control
Courtesy of CHRYSLER LLC

5. Separate the engine electrical harness connectors from the intake manifold.

6. Disconnect the EGR tube, PCV, Purge and power brake booster vacuum hoses from the upper intake

manifold.

1 - PCV HOSE
2 - PURGE HOSE
3 - BRAKE BOOSTER HOSE
4 - THROTTLE BRACKET
5 - ELECTRONIC THROTTLE CONTROL

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

7. Disconnect the electronic throttle control electrical connector.

8. Remove the throttle bracket (4) fasteners from the throttle body and cylinder head.

Fig. 278: Identifying Manifold Tuning Valve & Short Runner Valve
Courtesy of CHRYSLER LLC

9. Disconnect electrical connectors from the Manifold Tuning Valve (MTV) and Short Runner Valve.

10. Remove the right intake manifold support brackets.

11. Remove the upper intake manifold retaining bolts, insulation foam pad and manifold. Clean all gasket

sealing surfaces.

INSTALLATION

INTAKE MANIFOLD-LOWER

1 - Manifold Tuning Valve
2 - Short Runner Valve

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

Fig. 279: Lower Intake Manifold Tightening Sequence
Courtesy of CHRYSLER LLC

1. Clean all sealing surfaces.

2. Position new gaskets and intake manifold on cylinder head surfaces.

3. Install intake manifold bolts and gradually tighten in sequence shown until a torque of 28 N.m (250 in.

lbs.) is obtained. See Fig. 279.

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

Fig. 280: Fuel Rail, Ignition Coil, Lower Intake Manifold & PCV Valve
Courtesy of CHRYSLER LLC

4. Install fuel rail and injectors as an assembly. See Fig. 280, refer to INSTALLATION .

5. Connect fuel supply hose to fuel rail. (Refer to FUEL SYSTEM )

1 - FUEL RAIL
2 - IGNITION COIL
3 - LOWER INTAKE MANIFOLD
4 - PCV VALVE

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro