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most likely it is the engine temp. sensor that tells the fan the motor is hot if it is going bad then it can make the fan run non stop

I have the same problem in mazda6 2004 2.3l engine. If you have $100 you go to the dealer and get the update for compute unit, it is a bug in it. If you do not have money turn of the heater fan than engine is cold, as soon as engine warms up the fan will turn off.

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โˆ™ 2010-03-07 04:14:15
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Q: On a Mazda 6 the engine cooling fan now runs all the time what is wrong?
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