Cooling fans not working

Tiny
JAMES LUCE
  • MEMBER
  • 1998 BUICK CENTURY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
Cooling fans are not coming on.
Tuesday, August 17th, 2021 AT 9:26 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

There are few components to look at when you have inoperative cooling fan.
It could be faulty relay or fuse, short in the wiring harness, it could even be the coolant temperature sensor not triggering the fan to come on and it can be faulty fan motor.

First you want to check the relays and fuses for the cooling fan. If you have blown fuse or faulty relay, the power will not be sent to the fan motor and fan will not work.
They are located in the fuse box under the hood (see diagram).

Here are couple of helpful articles on how to check relays and fuses:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
https://www.2carpros.com/articles/how-to-check-a-car-fuse

Please let me know of any questions.

Thank you.

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Tuesday, August 17th, 2021 AT 10:13 AM

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