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Skoda Workshop Service and Repair Manuals

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Testing components > < Removing and installing engine speed senderG28

Octavia Mk2

Clean throttle valve control unitJ338
Clean throttle valve control unit -J338-
  Note
t  If a new engine control unit -J623- is fitted, the throttle valve control unit -J338- must be adapted. The adaptation must only be carried out with a new or cleaned throttle valve control unit -J338-. Dirt/carbon deposits in the end stop of the throttle valve can lead to incorrect adaptation values.
t  The throttle valve support must not be scratched when cleaning.
–  Remove air filter housing:
t  Engine identification characters BCA → Chapter
t  Engine identification characters BUD, CGGA → Chapter
–  Remove throttle valve control unit -J338- → Chapter.
   
–  Open the throttle valve manually and block the throttle valve in the opened position with a suitable object (e.g. plastic or wooden wedge)-arrow-.
  WARNING
Acetone is easily inflammable. Observe the accident prevention regulations and the safety instructions when handling easily inflammable fluids. Do not use compressed air when cleaning the throttle valve. Wear safety goggles and safety clothing, in order to avoid injuries and skin contact with fuel.
  N24-10125
–  Thoroughly clean the throttle valve support, in particular the area of the closed throttle valve -arrows-, with commercially available acetone in accordance with DIN 53247 and a paint brush.
–  Wipe the throttle valve support with a fluffy cloth.
–  Let the acetone dry off completely and re-install the cleaned throttle valve control unit -J338-.
–  Adapting the engine control unit -J623- to the throttle valve control unit -J338- → Vehicle diagnostic, testing and information system VAS 5051.
  N24-10124

Testing components > < Removing and installing engine speed senderG28