Dodge Nitro. Manual — part 680

Fig. 95: Identifying Pliers, Injector Clip, Fuel Injector & Fuel Rail
Courtesy of CHRYSLER LLC

1. Remove fuel rail. See REMOVAL.

2. Disconnect clip(s) (2) that retain fuel injector(s) (3) to fuel rail (4). See Fig. 95.

INSTALLATION

1 - PLIERS
2 - INJECTOR CLIP
3 - FUEL INJECTOR
4 - FUEL RAIL - TYPICAL

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

FUEL INJECTORS

Fig. 96: Identifying Pliers, Injector Clip, Fuel Injector & Fuel Rail
Courtesy of CHRYSLER LLC

1. Install fuel injector(s) (3) into fuel rail assembly (4) and install retaining clip(s) (2).

2. If same injector(s) is being reinstalled, install new O-ring(s). Two different O-rings are being used. These

1 - PLIERS
2 - INJECTOR CLIP
3 - FUEL INJECTOR
4 - FUEL RAIL - TYPICAL

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

can be easily identified by color. Install black O-ring at intake manifold end of injector. Install red/rust
colored O-ring at fuel rail end of injector.

3. Apply a small amount of clean engine oil to each injector O-ring. This will aid in installation.

4. Install fuel rail. See INSTALLATION.

5. Start engine and check for fuel leaks.

RELAY-FUEL PUMP

DESCRIPTION

FUEL PUMP RELAY

This vehicle is not equipped with a fuel pump relay. The fuel pump control is done through the TIPM. The
TIPM receives an input signal from the PCM. Once the TIPM receives the signal, it will output a 12 volt supply
to the fuel pump module turning the pump on.

SENSOR-INTAKE AIR TEMPERATURE

REMOVAL

REMOVAL - 3.7L

Fig. 97: Identifying Intake Manifold Air Temperature (IAT) Sensor & Electrical Connector
Courtesy of CHRYSLER LLC

The intake manifold air temperature (IAT) sensor (1) is installed into the rubber air intake tube near the throttle
body.

1. Disconnect electrical connector (2) from IAT sensor.

2. Clean dirt from IAT sensor base.

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro

3. Pull out on IAT sensor (1) while rotating for removal.

4. Check condition of sensor O-ring.

REMOVAL - 4.0L

Fig. 98: Identifying Electrical Connector & IAT Sensor
Courtesy of CHRYSLER LLC

The intake manifold air temperature (IAT) sensor (2) is installed into the rubber air intake tube near the throttle
body.

1. Disconnect electrical connector (1) from IAT sensor.

2. Clean dirt from IAT sensor base.

3. Pull out on IAT sensor (2) while rotating for removal.

4. Check condition of sensor O-ring.

INSTALLATION

INSTALLATION - 3.7L

2007 Dodge Nitro R/T

2007 ENGINE Fuel System - Nitro