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Cooling fan running slow

Tiny
SRDRAMOS
  • MEMBER
  • 2013 TOYOTA COROLLA
  • 1.8L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
My cooling fan is running slow. It is fast enough to cool down the motor but is not enough to cool down the AC radiator. I connected the fan directly to 12 volts and work fine. Checked the relay also and is working.

Any idea?
Monday, July 2nd, 2018 AT 10:30 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,724 POSTS
Hi and thanks for using 2CarPros.com.

When you connected it direct to the battery, did you provide both power from the battery plus a ground? Often times, a weak ground can cause resistance and lower the power supply.

Let me know if that is what you did. If it is, provide a new ground for the fan. If it is not, check the wiring for resistance issues, bad connections.

Here is a link that discusses how to check wiring:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care,
Joe
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Monday, July 2nd, 2018 AT 7:00 PM

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