Dodge Nitro. Manual — part 796

5. If MIL is still ON, check the harness connectors of glow plugs, repair any loose or damaged connections,

and run the glow plug actuator test again.

6. If MIL is still ON and glow plug DTCs are present, refer to 9 - Engine Electrical Diagnostics - Diesel,

and follow the diagnostic test(s) related to the active or stored DTCs.

REMOVAL

REMOVAL

Fig. 32: Glow Plugs & Wiring Harness
Courtesy of CHRYSLER LLC

The four glow plugs (1) are attached to cylinder head below fuel rail.

1. Disconnect negative battery cable.

2. Remove fuel rail and high-pressure fuel lines.

3. Disconnect glow plug wiring harness (2) at all four glow plugs (1).

2007 Dodge Nitro R/T

2007 ENGINE Ignition Control - Service Information - Nitro

Fig. 33: Glow Plugs - 2.8L Diesel
Courtesy of CHRYSLER LLC

4. Use a socket to loosen glow plug(s) (1), (2), (3) or (4). After loosening, attach a flexible tool such as a

rubber hose to remove glow plug from cylinder head.

INSTALLATION

INSTALLATION

CAUTION: After plug removal, do not bend, knock, or drop the glow plugs while

handling (any mechanical impact may damage the glow plug).

2007 Dodge Nitro R/T

2007 ENGINE Ignition Control - Service Information - Nitro

Fig. 34: Glow Plugs - 2.8L Diesel
Courtesy of CHRYSLER LLC

1. Apply a small amount of clean diesel oil or motor oil to glow plug threads.

2. Attach a flexible tool such as a rubber hose to install glow plug into cylinder head. Tighten each plug to

14 N.m (10 ft. lbs.) (124 in. lbs.) torque.

Fig. 35: Glow Plugs & Glow Plug Wiring Harness

2007 Dodge Nitro R/T

2007 ENGINE Ignition Control - Service Information - Nitro

Courtesy of CHRYSLER LLC

3. Connect glow plug wiring harness (2) to all four glow plugs (1).

4. Install fuel rail and high-pressure fuel lines.

5. Connect negative battery cable.

RELAY-GLOW PLUG 2.8L DIESEL

REMOVAL

REMOVAL

Fig. 36: Identifying Glow Plug Relay (Module), ECM Mounting Bracket, Electrical Connector & Pin
Courtesy of CHRYSLER LLC

The glow plug relay (module) (1) is located in the engine compartment. It is attached to the ECM mounting
bracket (2).

1. Remove pin (4).

2. Disconnect electrical connector (3) and remove relay.

INSTALLATION

INSTALLATION

2007 Dodge Nitro R/T

2007 ENGINE Ignition Control - Service Information - Nitro