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Home/Land Rover/Range Rover/Land Rover Range Rover L322 (2005-2009)/Repair manual/Engine Control Systems/Engine Emission Control (4.4l)
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Engine Emission Control (4.4l) Land Rover Range Rover L322

Engine Control Systems 3 illustrations ~399 words

SPECIFICATIONS

DescriptionNm
Exhaust gas recirculation (EGR) modulator valve bolts10
Exhaust gas recirculation (EGR) feed pipe to EGR valve bolt21
Positive Crankcase Ventilation (PCV) valve bolts10

TORQUE SPECIFICATIONS

Scheme 57

Scheme 57: EXHAUST GAS RECIRCULATION (EGR)
Scheme 57: EXHAUST GAS RECIRCULATION (EGR)
ItemDescription
1Electric Throttle
2EGR Valve
3Part Load Tube
4Positive Crankcase Ventilation (PCV) Valve
5EGR Tube
6Full Load Tube

The EGR system is controlled by a pulse width modulation (PWM) signal from the engine control module (ECM). The system comprises an EGR valve and a gas transfer pipe.

The EGR valve comprises a 4 pole stepper motor with an integral cooler unit which is mounted on the side of the induction elbow. The EGR valve is cooled by the return coolant flow from the electric throttle.

The EGR valve is connected to the LH exhaust manifold via the gas transfer pipe.

CRANKCASE VENTILATION

The V8 engine is ventilated through a part load and a full load breather.

The part load breather is a flexible composite hose connected between the PCV valve mounted above the oil separator in the bank A camshaft cover and the induction elbow. The PCV valve prevents reverse flow into the crankcase.

The full load breather is a flexible hose connected between the oil separator in the bank B camshaft cover and the air intake duct.

The ends of the breather hoses incorporate quick release connectors.

The oil separators consist of wire gauze packed into an open ended enclosure below the breather outlet.

Scheme 58

Scheme 58: REMOVAL
Scheme 58: REMOVAL
  1. Disconnect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information) .
  2. Remove the engine cover. Refer to «ENGINE COVER - 4.4L»(/land-rover/range-rover/l322-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
  3. Remove the PCV valve. Disconnect the PCV hose. Remove the 2 bolts. Release the PCV valve.

INSTALLATION

  1. To install, reverse the removal procedure. Clean the components. Lubricate the seal with clean engine oil. Tighten the bolts to 10 Nm (7 lb.ft).

Scheme 59

Scheme 59: REMOVAL
Scheme 59: REMOVAL
  1. Disconnect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information) .
  2. Remove the engine cover. Refer to «ENGINE COVER - 4.4L»(/land-rover/range-rover/l322-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
  3. Disconnect the EGR valve electrical connector.
  4. Release the clips and disconnect the coolant hoses from the EGR valve cooler. Position an absorbent cloth to collect fluid spillage. Clamp the EGR coolant hoses to minimize coolant loss.
  5. Remove the EGR valve. Remove the 2 bolts from the EGR cooler valve body.
  1. Install the EGR valve. Clean the component mating faces. Tighten the bolts to 10 Nm (7 lb.ft).
  2. Connect the coolant hoses. Secure the clips. Remove the hose clamps.
  3. Connect the EGR valve electrical connector.
  4. Install the engine cover. Refer to «ENGINE COVER - 4.4L»(/land-rover/range-rover/l322-2005-2009/remont/exteriorinterior-trim/#interior-trim-and-ornamentation) .
  5. Connect the battery ground cable. Refer to «SPECIFICATIONS»(/land-rover/range-rover/l322-2005-2009/remont/charging-system/#charging-system-general-information) .
  6. Check and top-up the coolant.

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