At what temperature does the coolant fan turn on?

2007 TOYOTA COROLLA
250,000 MILES • 1.8L • 4 CYL • 2WD • AUTOMATIC
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YAZIDAN
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  • 136 POSTS
I am planning to replace the water pump. I am wondering at what temperature of the coolant should my cooling fan comes on?
Aug 30, 2024 at 10:27 AM
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JACOBANDNICKOLAS
  • Experienced Mechanic
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Hi,

The engine cooling fan should turn on at approximately 200°F. +/- 5°F. I attached a picture below indicating that temperature. Note that it indicates above 199°.

Let me know if this helps or if you have any questions about the water pump replacement. Here is a link that explains in general how it is done. If you need specifics, let me know.

https://www.2carpros.com/articles/water-pump-replacement

Take care,

Joe

See pic below.
Aug 30, 2024 at 2:50 PM
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YAZIDAN
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  • 136 POSTS
I checked it yesterday. in my car the fan comes on when the temperature is at 205. is it okay?
Aug 30, 2024 at 10:29 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
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Hi,

Yes, that is perfect as far as I'm concerned. The actual thermostat in the cooling system doesn't fully open until the coolant temperature reaches 195°F. So, 205°F makes sense to me.

Let me know if you have other questions.

Take care,

Joe
Aug 31, 2024 at 11:27 AM
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YAZIDAN
  • MEMBER
  • 136 POSTS
just let you know water pump and thermostat done. thank you
Aug 31, 2024 at 12:21 PM
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JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,236 POSTS
Hi,

No problem whatsoever. Take care of yourself and feel free to come back anytime in the future.

Joe
Sep 1, 2024 at 12:58 PM
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