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Engine coolant over temperature

Tiny
MEAELLEN
  • MEMBER
  • 2013 FORD FUSION
  • 1.6L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 9,000 MILES
When it’s really hot outside the thermometer will go up with the air on. When it starts to rise I turn the air off and it goes back down. When the car is off and I start it the engine coolant over temperature light goes on and then goes off.
Friday, July 5th, 2019 AT 4:38 AM

1 Reply

Tiny
SCGRANTURISMO
  • MECHANIC
  • 4,897 POSTS
Hello,

This is normal. When you first start your vehicle the over temperature bulb should illuminate and the turn off. This is what is known as a bulb check and is completely normal. Also when your A/C turns on the A/C compressor clutch kicks in and the engine has to turn the A/C compressor which makes it work harder. As a result the temperature should rise a little, but your vehicle's engine cooling should kick on to compensate when the temperature reaches a certain point.

Thanks,
Alex
2CarPros
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Friday, July 5th, 2019 AT 6:36 PM

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