How to carry out replacement: Thermostat 1.3 VAUXHALL ASTRA Mk II Sedan
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Change VAUXHALL ASTRA Mk II Sedan 1.4 i Thermostat yourself – manuals and video tutorials

How to change engine thermostat on VAUXHALL ASTRA Mk II Belmont – replacement guide

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When to replace the Thermostat on your VAUXHALL ASTRA
Recommended replacement interval for the part category Engine thermostat : 50000 km
Important!
This replacement procedure can be used for:
VAUXHALL ASTRA Mk II Belmont 1.3, VAUXHALL ASTRA Mk II Belmont 1.4 i, VAUXHALL ASTRA Mk II Belmont 1.6 S … 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

All the parts you need to replace – Thermostat for ASTRA Mk II Belmont and other VAUXHALL models
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Tools
Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. Tools you'll need:
Wire brush
All-purpose cleaning spray
Torque wrench
Torx bit E10
Ratchet wrench
Clip removal tool
Clic-R collar pliers
Seal scraper
Funnel
Fluid container
Fender cover
Buy tools
Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. AUTODOC recommends:
  • Check the condition of the coolant every time you replace the thermostat. Change the coolant if necessary.
  • Please note: all work on the car – VAUXHALL ASTRA Mk II Sedan – should be done with the engine switched off.
  • All work should be done with the engine stopped.
Carry out replacement in the following order:
  1. Step 1
    Open the bonnet.
    Step 2
    Use a fender protection cover to prevent damaging paintwork and plastic parts of the car.
    Step 3
    How to change Thermostat on VAUXHALL ASTRA Mk II Sedan 1985 - free PDF and video manuals
    Unscrew the coolant reservoir cap.
  2. Step 4
    Raise the car.
    Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. Professionals recommend:
    If you are using a jack, make sure it rests on a flat surface without any unevenness.Be sure to additionally secure the car with jack stands.
    Step 5
    How to replace VAUXHALL ASTRA Mk II Belmont 1.3 1986 Thermostat - step-by-step manuals and video guides
    Clean the lower coolant pipe mounting seat. Use all-purpose cleaning spray.
  3. Step 6
    VAUXHALL ASTRA Mk II Sedan 1.8 1987 Thermostat replacement: free workshop manuals
    Prepare a container for fluids.
  4. Step 7
    Changing Thermostat on VAUXHALL ASTRA Mk II Belmont 1.6 S 1988 by yourself
    Loosen the coolant hose clamp. Use clic-R collar pliers.
  5. Step 8
    How to remove VAUXHALL ASTRA 1.7 D 1989 Thermostat - online easy-to-follow instructions
    Detach the coolant hose.
    Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. AUTODOC experts recommend:
    Caution! Coolant may leak out of the coolant lines and thermostat housing.
  6. Step 9
    How to replace Thermostat on VAUXHALL ASTRA Mk II Belmont 1990: download PDF manuals and video instructions
    Drain the coolant from the engine.
    Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. Tip:
    Wear gloves to prevent contact with hot liquid.
  7. Step 10
    How hard is it to do yourself: Thermostat replacement on VAUXHALL ASTRA Mk II Sedan 1.3 1991 - download illustrated guide
    Attach the coolant hose.
  8. Step 11
    Need to know how to renew Thermostat on VAUXHALL ASTRA 1985? This free workshop manual will help you to do it yourself
    Secure the coolant hose clamp. Use clic-R collar pliers.
  9. Step 12
    Lower the car.
    Step 13
    Changing of Thermostat on VAUXHALL ASTRA Mk II Sedan 1986 won't be an issue if you follow this illustrated step-by-step guide
    Remove the clip on the air filter intake hose. Use a clip removal tool.
  10. Step 14
    VAUXHALL ASTRA 1.4 i Thermostat replacement: online guides and video tutorials
    Disconnect the air intake pipe from the air filter housing.
  11. Step 15
    Replacing Thermostat on VAUXHALL ASTRA Mk II Sedan 1988 1.3 by yourself
    Clean the coolant hose connections. Use all-purpose cleaning spray.
  12. Step 16
    ASTRA Mk II Belmont 1.7 D 1989 Thermostat DIY replacement workshop manual
    Loosen the clamps of the coolant hoses. Use clic-R collar pliers.
  13. Step 17
    How to change Thermostat on VAUXHALL ASTRA Mk II Belmont 1990 - tips and tricks
    Detach the coolant hose.
    Replacement: engine thermostat – VAUXHALL ASTRA Mk II Sedan. AUTODOC recommends:
    Caution! Coolant may leak out of the coolant lines and thermostat housing.
  14. Step 18
    Step-by-step recommendations for DIY replacement VAUXHALL ASTRA Mk II Sedan 1991 1.7 D Thermostat
    Cover the radiator hose to prevent dirt or foreign objects from entering the system.
  15. Step 19
    DIY replacement of Thermostat on VAUXHALL ASTRA Mk II Belmont 1.4 i 1985 is not an issue anymore with our step-by-step tutorial
    Clean the thermostat housing. Use a wire brush. Use all-purpose cleaning spray.
  16. Step 20
    How to change Thermostat on VAUXHALL ASTRA Mk II Sedan 1985 - free PDF and video manuals
    Unscrew the thermostat housing fasteners. Use Torx E10. Use a ratchet wrench.
  17. Step 21
    How to replace VAUXHALL ASTRA Mk II Belmont 1.3 1986 Thermostat - step-by-step manuals and video guides
    Remove the thermostat housing together with the thermostat.
  18. Step 22
    VAUXHALL ASTRA Mk II Sedan 1.8 1987 Thermostat replacement: free workshop manuals
    Cover the mounting seat of the thermostat housing with a microfibre cloth to prevent dirt and foreign objects from entering the system.
  19. Step 23
    Changing Thermostat on VAUXHALL ASTRA Mk II Belmont 1.6 S 1988 by yourself
    Remove the rubber strip.
  20. Step 24
    How to remove VAUXHALL ASTRA 1.7 D 1989 Thermostat - online easy-to-follow instructions
    Clean the mounting seats of the thermostat housing. Use all-purpose cleaning spray. Use a seal scraper.
  21. Step 25
    How to replace Thermostat on VAUXHALL ASTRA Mk II Belmont 1990: download PDF manuals and video instructions
    Install the new thermostat housing together with the thermostat.
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