How to Replace a Thermostat on a Chevy Cavalier
If your Chevrolet Cavalier is running hot, whether it is over-heating or just running at a higher temperature, then it might be time to replace your thermostat. Thermostat replacement is easy and takes about one hour.Not all thermostats in a Chevy Cavalier are located in the same place, so check with your local parts store for your exact location.
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Things You'll Need
- Wrenches and sockets
- Torque wrench
- Thermostat and gasket
- Gasket scrapper
- Antifreeze
- Screwdriver
Instructions
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1
Follow the lower radiator hose to where it meets the thermostat housing. The thermostat housing is where the opposite end of the lower radiator hose mounts to the engine.
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2
Drain enough coolant from radiator until it is below the thermostat. Failure to do this will result in your antifreeze leaking out onto the ground.
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3
Loosen clamp and remove radiator hose from thermostat housing. Some antifreeze will leak out, so have some rags available.
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4
Remove the bolts holding the thermostat housing on and pull the housing from the engine. The gasket might make it a little difficult, so do not be afraid to pull hard. Do not strike it with any tools as you can crack it.
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5
Remove the old thermostat and note its alignment.
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6
Place a rag in the thermostat’s mounting hole so no gasket material can enter the engine and then scrape the gasket from the housing and the engine.
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7
Install the new thermostat in same position as old one.
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8
Reinstall the housing and tighten down bolts snugly. Torque them with your torque wrench to 10 ft.-lbs. Make sure you do not over-tighten them.
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9
Reinstall the radiator hose to thermostat housing and tighten the clamp.
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10
Refill the radiator with coolant and start the engine, allowing it to reach normal operating temperature.
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11
Check for any leaks at hose connection and thermostat housing. You can tighten them as necessary to stop any leaks.
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12
Stop the engine and allow it to cool down completely then check the coolant level. Add coolant as required.
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1
Tips & Warnings
Always be careful when working around a hot engine.
Never open the radiator or any related components while the engine is hot.
Never allow anyone or anything to drink antifreeze. It is poisonous.
Never pour antifreeze down a drain. It is against EPA regulations.
