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Why does my Subaru Legacy keep overheating?

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Why does my Subaru Legacy keep overheating?

While there are a variety of reasons your Subaru Legacy is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.

How do you fix an overheating engine?

What to Do When Your Engine Overheats

  1. Kill the A/C and crank the heat. Immediately turn off the air conditioner to reduce stress on the engine.
  2. Find a safe place to pull over. Pull over and shut off the car.
  3. Check and add coolant (if you have it).
  4. Restart the engine.

What should you never remove if your engine is overheating?

Avoid: Removing the radiator pressure cap while the engine is hot to prevent scorching hot coolant from spraying out. Turning on your vehicle’s AC to cool down your car. Pouring water over the engine, because the sudden change in temperature can crack the engine’s body.

How do I know when my thermostat is bad?

HVAC system won’t turn on: The most obvious sign of a bad thermostat is that the HVAC system in your building won’t turn on or respond to the thermostat. You should be able to turn on your heating or cooling system from the thermostat, or change operation back and forth from heating to cooling.

How do I know if my thermostat is bad?

How can you tell if your thermostat is stuck closed?

Look to see if the coolant is swirling/flowing immediately — that means the thermostat’s stuck open. If the coolant doesn’t flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it’s hot, the thermostat’s likely stuck closed.

How do you know if your thermostat is stuck open?

Cold engine test: Start the engine. Time how long it takes the engine to warm up enough to produce heat when the heater is turned on. If it takes more than five minutes for the heater to produce heat, it is a sign that the thermostat is stuck open, allowing all the coolant to flow all the time.

How do I know if my truck thermostat is bad?

Here are the signs your car thermostat is failing:

  1. The temperature gauge reads high and the engine overheats.
  2. The temperature changes erratically.
  3. The vehicle’s coolant leaks around the thermostat or under the vehicle.