How to carry out replacement: Thermostat 1.9 TDI Golf 4 Van
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Change Golf 4 Van 1.9 TDI Thermostat yourself – manuals and video tutorials

How to change engine thermostat on VW Golf IV Van (1J1) – replacement guide

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When to replace the Thermostat on your VW GOLF
Recommended replacement interval for the part category Thermostat : 50000 km
Important!
This replacement procedure can be used for:
Golf IV Van (1J1) (05.2000 - 05.2004) … View more

The steps may slightly vary depending on the car design.

This video shows the replacement procedure of a similar car part on another vehicle

Tools
Replacement: engine thermostat – VW GOLF IV Van (1J1). Tools you might need:
Torque wrench
Drive socket # 7
Drive socket # 10
Drive socket # 13
Ratchet wrench
Fluid container
Funnel
Fender cover
Buy tools
Replacement: engine thermostat – VW GOLF IV Van (1J1). Tip from AUTODOC:
  • Check the condition of the coolant every time you replace the thermostat. Change the coolant if necessary.
  • Please note: all work on the car – VW GOLF IV Van (1J1) – should be done with the engine switched off.
Carry out replacement in the following order:
  1. Step 1
    Open the hood.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    How to change Thermostat on Golf 4 Van 2000 - free PDF and video manuals
    Unscrew the coolant reservoir cap.
  2. Step 4
    How to replace VW Golf IV Van (1J1) 1.9 TDI 2001 Thermostat - step-by-step manuals and video guides
    Prepare a container for fluids.
  3. Step 5
    Golf 4 Van 1.9 TDI 2002 Thermostat replacement: free workshop manuals
    Loosen the coolant hose clamp. Use a drive socket #7. Use a ratchet wrench.
  4. Step 6
    Changing Thermostat on VW Golf IV Van (1J1) 1.9 TDI 2003 by yourself
    Detach the coolant hose.
  5. Step 7
    How to remove VW GOLF 1.9 TDI 2004 Thermostat - online easy-to-follow instructions
    Drain the coolant from the engine.
    Replacement: engine thermostat – VW GOLF IV Van (1J1). Tip:
    Caution! The coolant can be very hot.Wear gloves to prevent contact with hot liquid.All work should be done with the engine stopped.Wait until the coolant has completely flowed out of the drain hole.
  6. Step 8
    How to replace Thermostat on VW Golf IV Van (1J1) 2000: download PDF manuals and video instructions
    Unscrew the thermostat housing fasteners. Use a drive socket #13. Use a ratchet wrench.
  7. Step 9
    How hard is it to do yourself: Thermostat replacement on Golf 4 Van 1.9 TDI 2001 - download illustrated guide
    Remove the thermostat housing.
    AUTODOC recommends:
    Replacement: engine thermostat – VW GOLF IV Van (1J1). Do not use excessive force when removing the part as this may damage it.
  8. Step 10
    Need to know how to renew Thermostat on VW GOLF 2002? This free workshop manual will help you to do it yourself
    Remove the thermostat.
    AUTODOC recommends:
    Replacement: engine thermostat – VW GOLF IV Van (1J1). Do not use excessive force when removing the part as this may damage it.Caution! Coolant may leak out of the coolant lines and thermostat housing.
  9. Step 11
    Changing of Thermostat on Golf 4 Van 2003 won't be an issue if you follow this illustrated step-by-step guide
    Install a new thermostat.
    Replacement: engine thermostat – VW GOLF IV Van (1J1). Tip:
    When installing, do not use excessive force to avoid damage to the part.
  10. Step 12
    VW GOLF 1.9 TDI Thermostat replacement: online guides and video tutorials
    Install the thermostat housing.
  11. Step 13
    Replacing Thermostat on Golf 4 Van 2000 1.9 TDI by yourself
    Tighten the thermostat housing fasteners. Use a drive socket #10. Use a torque wrench. Tighten it to 13 nm torque.
  12. Step 14
    Golf IV Van (1J1) 1.9 TDI 2001 Thermostat DIY replacement workshop manual
    Attach the coolant hose.
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