Dodge Nitro. Manual — part 55

INSTALLATION

INTAKE MANIFOLD

Fig. 161: 3.7L Intake Torque Sequence
Courtesy of CHRYSLER LLC

1. Install the intake manifold seals.

2. Install the intake manifold.

3. Install the intake manifold retaining bolts and tighten in sequence shown to 12 N.m (105 in. lbs.).

Fig. 162: Throttle Body 3.7L, Mounting Bolts & Elec. Connector
Courtesy of CHRYSLER LLC

1 - THROTTLE BODY

2007 Dodge Nitro R/T

2007 ENGINE 3.7L - Service Information - Nitro

4. Install the throttle body-to-intake manifold O-ring.

5. Install the throttle body (1) to intake manifold.

6. Install the four mounting bolts (2). Tighten bolts to 7 N.m (60 in. lbs.).

7. Install electrical connector (3).

Fig. 163: EGR Solenoid/Tube Assembly
Courtesy of CHRYSLER LLC

8. Install the fuel rail.

9. Install the EGR tube (1). Refer to INSTALLATION .

10. Install ignition coil towers.

2 - MOUNTING BOLTS
3 - ELEC. CONNECTOR

CAUTION: Proper torque of the throttle body is critical to normal operation. If

the throttle body is over-torqued, damage to the throttle body can
occur resulting in throttle plate malfunction.

2007 Dodge Nitro R/T

2007 ENGINE 3.7L - Service Information - Nitro

Fig. 164: Map Sensor - 3.7L, Mounting Screws, ECT Sensor & Front Of Intake Manifold
Courtesy of CHRYSLER LLC

11. Connect electrical connectors for the following components:

Manifold Absolute Pressure (MAP) Sensor (2)

Coolant Temperature (CTS) Sensor

Ignition coil towers

12. Install top oil dipstick tube retaining bolt.

13. Connect Vapor purge hose, Brake booster hose, Positive crankcase ventilation (PCV) hose.

14. Fill the cooling system.

15. Install the resonator assembly and air inlet hose.

16. Connect the negative cable to battery.

17. Using the scan tool, perform the ETC Relearn function.

MANIFOLD-EXHAUST

DESCRIPTION

EXHAUST MANIFOLD

1 - MOUNTING SCREWS
2 - MAP SENSOR
3 - ECT SENSOR
4 - FRONT OF INTAKE MANIFOLD

2007 Dodge Nitro R/T

2007 ENGINE 3.7L - Service Information - Nitro

Fig. 165: Exhaust Manifolds
Courtesy of CHRYSLER LLC

1 - LEFT SIDE EXHAUST MANIFOLD
2 - RIGHT SIDE EXHAUST MANIFOLD

2007 Dodge Nitro R/T

2007 ENGINE 3.7L - Service Information - Nitro