Audi A4 Owners & Service Manuals

Audi A4: Coolant Pump/Coolant Thermostat

Audi A4 (B9) 2016-2025 Service Manual / Engine / 4-Cylinder Direct Injection 2.0L 4V TFSI Engine (EA 888 Generation III BZ) / Cooling System / Coolant Pump/Coolant Thermostat

Overview - Coolant Pump/Coolant Thermostat

Overview - Coolant Pump/Coolant Thermostat

1 - Connection

2 - O-ring

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

3 - Centering Pin

4 - Bolt

  • Tightening specifications. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

5 - Seal

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

6 - Coolant Pump

  • Removing and installing. Refer to → Chapter "Coolant Pump, Removing and Installing".

7 - Bolt

  • Tightening specifications. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

8 - Toothed Belt

  • For the coolant pump
  • Removing and installing. Refer to → Chapter "Coolant Pump Toothed Belt, Removing and Installing".

9 - Bolt

  • Tightening specifications. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

10 - Toothed Belt Guard

11 - Bolt

  • Tightening specifications. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

12 - Toothed Belt Sprocket

13 - Seal

  • Replacing. Refer to → Chapter "Balance Shaft Gasket, Replacing, Intake Side".

14 - Balance Shaft

15 - Seal

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Coolant Pump/Coolant Regulation.

16 - Engine Temperature Control Actuator -N493-

  • Removing and installing. Refer to → Chapter "Engine Temperature Control Actuator -N493-, Removing and Installing".

Overview - Electric Coolant Pump

Overview - Electric Coolant Pump

1 - Bolt

  • 9 Nm

2 - Coolant Recirculation Pump -V50-

  • Removing and installing. Refer to → Chapter "Coolant Recirculation Pump -V50-, Removing and Installing".

3 - After-Run Coolant Pump -V51-

  • Removing and installing. Refer to → Chapter "After-Run Coolant Pump -V51-, Removing and Installing".

4 - Bolt

  • 9 Nm

5 - Rubber Grommet

6 - Bolt

  • 2.7 Nm

7 - Rubber Grommet

8 - Bolt

  • 2.7 Nm

9 - Bracket

  • For the electric coolant pump

Overview - Engine Coolant Temperature Sensor

Overview - Engine Coolant Temperature Sensor

1 - Clip

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Engine Coolant Temperature Sensor.

2 - O-ring

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Engine Coolant Temperature Sensor.

3 - O-ring

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Engine Coolant Temperature Sensor.

4 - O-ring

  • Installation instructions. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Engine Coolant Temperature Sensor.

5 - Engine Coolant Temperature Sensor -G62-

  • On transmission side of the cylinder head
  • Removing and installing. Refer to → Chapter "Engine Coolant Temperature Sensor -G62-, Removing and Installing".

6 - Bolt

  • Tightening specifications. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.19; Coolant Pump/Coolant Regulation; Overview - Engine Coolant Temperature Sensor.

7 - Engine Coolant Temperature Sensor on Radiator Outlet -G83-

  • Removing and installing. Refer to → Chapter "Engine Coolant Temperature Sensor on Radiator Outlet -G83-, Removing and Installing".

    READ NEXT:

     Electric Coolant Pump, Removing and Installing

    Coolant Recirculation Pump -V50-, Removing and Installing Special tools and workshop equipment required Hose Clamps - Up To 25mm -3094- Hose Clip Pliers -VAS6340- Removing - Remove the engine

     Coolant Pump, Removing and Installing

    Removing - Remove the engine cover. Refer to → Servicing - 4-Cylinder 2.0L 4V TFSI Engine; Rep. Gr.10; Engine Cover; Engine Cover, Removing and Installing. - Drain the coo

     Radiator/Radiator Fan

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