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Home >> Audi >> 2012 >> Q7 3.0 TDI >> Repair and Diagnosis >> External Pages >> Different car >> Section 29 (3.0L - Exhaust System & Emission Controls - Engine Code: CATA) >> 26 Exhaust System, Emission Controls >> Exhaust Gas RECIRCULATION >> Exhaust Gas RECIRCULATION Overview

Exhaust Gas RECIRCULATION Overview

WARNING: This page is about a different car, the 2011 Audi Q7, 2010 Audi Q7, and 2009 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Part 1 

Fig 1: Exhaust Gas Recirculation Overview
GWWA26-10663Courtesy of AUDI OF AMERICA, LLC
  1. EGR Pipe
  2. Washer
    • Replace
  3. Clip
    • Tightening specification: 9 Nm
    • Installation position: as illustrated.
  4. Coolant Hose
  5. EGR Coolant Thermostat with Connection
  6. Clamp
  7. O-Ring
    • Replace
  8. O-Ring
    • Replace
  9. Bolt
    • Tightening specification: 9 Nm
  10. EGR Motor -V338-
  11. Bolt
    • Tightening specification: 9 Nm
  12. EGR Change-Over Vacuum Diaphragm
  13. Bolt
    • Tightening specification: 9 Nm
  14. Coolant Hoses
  15. EGR Temperature Sensor -G98-
  16. Bolt
    • Tightening specification: 9 Nm
  17. Crankcase Ventilation Pipe
  18. Bolt
    • Tightening specification: 5 Nm +90° turn
  19. EGR Pipe
  20. Seal
    • Replace
  21. Bolt
    • Tightening specification: 9 Nm
  22. EGR Cooler
  23. O-Ring
    • Replace
  24. Coolant Hose

Part 2 

Fig 2: Exhaust Gas Recirculation Auxiliary Cooler Overview
GWWA26-10664Courtesy of AUDI OF AMERICA, LLC
  1. Auxiliary EGR Cooler
  2. Seal
    • Replace
  3. Bolt
    • Tightening specification: 9 Nm
  4. EGR Pipe
  5. EGR Pipe
  6. Bolt
    • Tightening specification: 9 Nm
  7. Seal
    • Replace
  8. Bolt
    • Tightening specification: 9 Nm
  9. Vacuum Hose
    • From the EGR Cooler Switch Over Valve 2 -N381-.
  10. Rear Coolant Pipe
  11. O-Ring
    • Replace
  12. Bolt
    • Tightening specification: 9 Nm (Rear coolant pipe)
  13. Bolt
    • Tightening specification: 9 Nm (Rear coolant pipe)
  14. Coolant Pipe
  15. O-Ring
    • Replace
  16. Bolt
    • Tightening specification: 9 Nm