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Radiator fan not working?

Tiny
JADELEON
  • MEMBER
  • 1999 FORD MUSTANG
Engine Cooling problem 6 cyl Two Wheel Drive Automatic 107000 miles

How do I check to see if my 99 mustang radiator fan is working? I had the car running with heater at full blast for at least 20 minutes but the fan did not turn on. Another problem is with the ac. It cools but every time the car comes to a stop the air goes from cold to warm. As I continue traveling the air turns cold but at every light or stop, it goes back to warm air.
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Wednesday, October 22nd, 2008 AT 10:29 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
It does sound like you have a radiator fan that is not working. While the air conditioner is on lets use a test light to probe the wires of the fan to see if it is getting power. Here is a guide to help you get the job done.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and if it is getting power and not working the fan motor has gone bad and needs replacement.

Here is a guide that will give you an idea of what you are in for when doing the job.

https://www.2carpros.com/articles/replace-electric-fan-motor

Please let us know what happens and upload pictures or videos of the problem.

Cheers, Ken
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Thursday, September 21st, 2017 AT 3:08 PM

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