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Thermostat Housing

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How to Replace Your Thermostat Housing

Overheating is a terrible problem to have, especially when you're driving far from a repair shop or service station. Your vehicle's thermostat let's you keep an eye on your engine's temperature, so it's best to have this working properly all the time. The most common problem that affects the thermostat would be a cracked housing. Once this component cracks, water and debris can flow in freely and ruin the thermostat itself. Replacing this part is quite easy and you won't need to bring your vehicle to a mechanic to install a new one for you. Go through our installation guide and replace your thermostat housing in just a few easy steps.

Required skill level: Intermediate

Needed tools and materials

  • Adjustable wrench
  • Bucket
  • Ratchet
  • Socket set
  • Wrench
  • Pliers
  • Small rubber hose

Before starting

Make sure to let the engine cool down for at least an hour before working on the thermostat housing. This component deals with extremely high temperatures and you could get injured if it hasn't cooled down enough.

Draining the cooling system

After cooling down the engine, begin by draining the cooling system. You should be able to find a small screw cap under the lower part of the radiator that will allow you to drain out the coolant. You can use a small rubber hose or funnel to guide the liquid out into a small bucket. Make sure that you dispose of the coolant properly.

Removing the other components connected to the thermostat

For most vehicles, you'll need to remove the belt and plastic fan before you could access the thermostat housing. Once you've done this, you'll have to remove a couple of hoses that are attached to the thermostat with a couple of metal ring clamps. Loosen the clamps disconnect the hoses.

Replacing the thermostat housing

Next, you should remove the bolts that hold the thermostat housing in place. Once the bolts are removed, give the housing a light tap to remove it from its mount. From here, it's a simple matter of installing a new thermostat housing and following the instructions back in reverse. Don't forget to refill the cooling system with the right amount of coolant afterwards and you're done!