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Testing intake manifold flap change-over function > < Fitting locations overview

A4 Mk1

TDI® diesel direct injection and glow plug system (4-cyl. unit injector)
Servicing diesel direct injection system
Servicing intake manifold flap
 
N23-0272

The intake manifold flap is closed for approx. 3 seconds when stopping engine and then opens again. This reduces the jolt when the engine stops.

  • From charge air cooler
  • 10 Nm
  • Intake connecting flange
    • ◆ With exhaust gas recirculation valve and intake manifold flap
  • Mechanical exhaust gas recirculation valve
  • O ring
    • ◆ Renew
  • Intake manifold
 
N23-0272
  • Gasket
    • ◆ Renew
  • Connecting pipe
    • ◆ To exhaust manifold
  • 25 Nm
  • Vacuum supply
    • ◆ From vacuum pump
  • Intake manifold flap change-over valve -N239
    • ◆ Checking => Page 23-11
  • Vacuum control element
  • Bracket
  • 10 Nm

Testing intake manifold flap change-over function > < Fitting locations overview