Contents: Removal ⬇ Installation ⬇
Removal
1. Loosen the mounting screws (1) shown in the figure below, then detach the mounting clamp.
2. Disconnect the wiring harness connector (2) from the boost pressure sensor G31 with the intake air temperature sensor 2 G299, as shown in the figure below.
3. Unlock the fasteners in the direction of the arrow, disconnect the pressure pipe (3) first from the throttle valve module J338 and then from the turbocharger.
4. Disconnect the wiring harness connector (1) from the throttle valve module J338 as shown in the illustration below.
5. Unscrew the mounting screws (2) and remove the throttle valve module J338 from the intake manifold.
Installation
1. A new sealing ring should be inserted into the groove of the intake manifold.
2. Install the throttle module (3) together with the adapter (2) and mounting screws (1) onto the intake manifold (4) as shown in the figure below.
3. Tighten the mounting screws (2) to a tightening torque of 7 Nm, as shown in the figure below.
4. Install the wiring harness connector (1) to the throttle module (3) as shown in the figure below.
Note: Before installation, lightly lubricate the O-rings on the turbocharger and in the pressure line with engine oil.
5. Install the intake manifold (3) onto the turbocharger as shown in the figure below.
6. Install the pressure pipe (3) onto the throttle module. The retaining clips should click into place.
7. Tighten the mounting clamp fastening screws (1) to a tightening torque of 7 Nm.
8. Install the wiring harness connector (2) to the boost pressure sensor G31 with the intake air temperature sensor 2 G299 as shown in the figure below.
When installing a new throttle module
9. Reset the learned values and adapt the engine control unit J623 to the throttle control mechanism.
Cleaning the Throttle Body Module Assembly
Note.
- Observe safety precautions when working on the power supply system.
- If a new engine control unit J623 is installed, the throttle control mechanism must be adapted. The adaptation can only be carried out with a new or cleaned throttle control mechanism, since carbon contamination in the areas where the closed throttle valve contacts the nipple can lead to distorted adaptation values.
- Be extremely careful when cleaning to avoid scratching the throttle bore.
1. Remove the throttle module assembly (see the relevant section in this chapter).
2. Open the throttle valve by hand and lock it in the open position with a suitable object (for example, with a plastic or wooden wedge) (arrow) as shown in the figure below.
Warning. Acetone is flammable. Observe safety regulations and safety instructions for handling flammable liquids. Do not use compressed air to clean the throttle valve. Wear safety glasses and protective clothing to avoid injury and skin contact with fuel.
3. Using regular acetone and a brush, thoroughly clean the throttle valve opening, especially in the area where the throttle valve meets the walls (arrows).
4. Wipe the cleaned surface of the throttle valve with a clean, lint-free cloth.
Information taken from this resource [skodabook.ru]
5. Allow the acetone to completely evaporate and reinstall the cleaned throttle module.
