electrical coolant fans don't come on. does mini relays go bad?
Mar 11, 2009 at 8:56 AM
coolant fans don't come on?
1998 CHEVROLET VENTURE
CONNIE1
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Hello,
A cooling fan might not come on for few reasons. First of all it can be a bad fan motor, it could be the ran relay or it could be the temperature sensor.
https://www.2carpros.com/articles/how-an-electric-cooling-fan-works
https://www.2carpros.com/articles/replace-electric-fan-motor
The relay for the cooling fan is located in the junction box under the hood.
You need to test the relay and make sure if it is good. Sometimes you will have the pin(s) on a relay burnt.
Here is how to test the relay:
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
It could also be a wiring issue.
I have attached the cooling fan wiring schematics for your reference.
Please let me know of any questions.
Thank you.
A cooling fan might not come on for few reasons. First of all it can be a bad fan motor, it could be the ran relay or it could be the temperature sensor.
https://www.2carpros.com/articles/how-an-electric-cooling-fan-works
https://www.2carpros.com/articles/replace-electric-fan-motor
The relay for the cooling fan is located in the junction box under the hood.
You need to test the relay and make sure if it is good. Sometimes you will have the pin(s) on a relay burnt.
Here is how to test the relay:
https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit
It could also be a wiring issue.
I have attached the cooling fan wiring schematics for your reference.
Please let me know of any questions.
Thank you.
Image (Click to enlarge)
Aug 5, 2021 at 8:49 PM
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