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Radiator fan not working

Tiny
SISCO707
  • MEMBER
  • 2006 CHRYSLER 300
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 55,000 MILES
Why will my radiator fan not turn on? When I turn on the A/C it overheats and the fans do not turn on.
Wednesday, June 1st, 2011 AT 6:34 PM

8 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Maybe faulty temperature sensor, relay or fan motor. Come on with AC? Do you have a volt meter and some understanding of electronics?
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Wednesday, June 1st, 2011 AT 7:00 PM
Tiny
SISCO707
  • MEMBER
  • 4 POSTS
No I do not, but I can probably get one. And no I am not very good on electrical. I bought a cooling fan relay for $5.00 but it will not be available until tomorrow. Am I on the right track?
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Wednesday, June 1st, 2011 AT 7:09 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Relay possible. However, for both fans not working not likely there are three fan relays.
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Wednesday, June 1st, 2011 AT 7:18 PM
Tiny
SISCO707
  • MEMBER
  • 4 POSTS
So should I buy all three? Are they all the same?
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Wednesday, June 1st, 2011 AT 7:27 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Here is the wiring diagram to help fix the problem:
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Wednesday, June 1st, 2011 AT 9:54 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
I would really be surprised if what you're getting even fits the car. 2 out of 3 of these relays are 5 wire relays and not your generic style. It's a 2 speed system so if you have a bad relay somewhere, chances are you'd have at least one speed working. Check all your fuses carefully and that's about as far as you'll be able to go yourself.
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Wednesday, June 1st, 2011 AT 10:29 PM
Tiny
SISCO707
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  • 4 POSTS
Okay, thank you.
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Wednesday, June 1st, 2011 AT 10:43 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,822 POSTS
Hey SISCO707,

I found a better wiring diagram for you. it looks like the problem could be one of the relays or one of the two fuses. make sure you check them all.

Here are a couple of guides that can help you:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

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

Please run some tests and get back to us so we can continue helping you.

Best, Ken

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Wednesday, December 7th, 2016 AT 6:46 PM

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