Contents: Removal 🠛 Installation 🠛
- The engine stop unit, controlled by the fuel injection system control unit, is equipped with a throttle valve at the intake air inlet, which closes when the ignition is switched off, thereby ensuring a rapid engine stop.
- The engine stop block housing also contains an electromagnetic exhaust gas recirculation valve
Removal
- Place the vehicle on a two-post lift.
- Disconnect the cable from the negative terminal of the battery
- Remove the engine oil pan guard and the air duct running from the heat exchanger to the engine stop unit, after disconnecting the wire connector from the engine stop unit.
- Use a clamp to pinch the return line connecting the power steering fluid reservoir to the power steering pump and disconnect the line from the pump.
- Remove the power steering reservoir from its mount without disconnecting it from the pump and position the reservoir on the side member.
- Unscrew the bolts securing the air duct running from the turbocharger to the heat exchanger and cylinder head (Fig. 4.34).
Fig. 4.33. Location of the engine stop block housing
Fig. 4.34. Location of the bolt securing the air duct running from the turbocharger to the heat exchanger and cylinder head
- Remove the reinforcement paw (1, Fig. 4.35), connecting the turbocharger engine stop block housing to the power steering pump bracket.
Fig. 4.35. Location of the booster paw (1) and exhaust gas recirculation hose (2) on the engine
- Remove the EGR hose and sealing gaskets. Replace the hose and gaskets when installing the air duct
- Disconnect the connector from the EGR control solenoid valve.
- Remove the foot mounting bolt (3, Fig. 4.36) low pressure air conditioner pipeline.
Fig. 4.36. Positioning the bolt for fastening the tab (3) and unscrewing the bolt (4) for fastening the throttle assembly
- Remove the bolts securing the throttle assembly to the engine block. Use a 13 mm socket, cardan joint and a small extension to do this. If necessary, move the pipes to the side to access the bolts.
Caution: Do not remove self-tapping screws (A, Fig. 4.37) fastening the upper part to the throttle body.
Fig. 4.37. Location of self-tapping screws (A) for fastening the upper part to the throttle body
- Remove the pipe (1. Fig. 4.38), connecting the throttle body to the intake manifold.
Fig. 4.38. Location of clamps for fastening the pipe (1) connecting the intake manifold to the turbocharger engine stop block and lugs (2)
- To facilitate removal of the Engine Stop Unit, disconnect the wiring harness located in front of the Engine Stop Unit housing from its fasteners
Installation
- Installation is carried out in the reverse order of removal.
- Tighten the nuts of the mounting clamps to a torque of 55 N·m.
- Using the diagnostic tool, check whether any stored fault codes have been registered and clear the codes if any.