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1999 Mazda 626 cooling fans

Tiny
G.RICHARDSON21
  • MEMBER
  • 1999 MAZDA 626
Engine Cooling problem
1999 Mazda 626 6 cyl Front Wheel Drive Automatic 160k miles

The cooling fans will not come on when required. I know they work because I disconnected them from thier plug-in and connected them directly to the battery. They did run. There must be a sensor that is not working is my guess. The temp gauge does work. Any thoughts on what is going on?
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Wednesday, September 15th, 2010 AT 4:42 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Hello and thanks for donating

Check your fuses and the cooling fan relay, if they are good than the PCM is probably at fault since it runs the fan, not a sensor.
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Wednesday, September 15th, 2010 AT 4:56 PM
Tiny
G.RICHARDSON21
  • MEMBER
  • 2 POSTS
PCM?
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Thursday, September 16th, 2010 AT 1:51 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
PCM stands for powertrain control module and acts as the main computer for the vehicle.
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Friday, September 17th, 2010 AT 12:23 PM

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