Question about 2003 Ford Mustang

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I've replaced the cooling fan motor on my 2003 Mustang GT and the blown 50 amp fuse; also replaced the resistor, yet the fan only comes on when the ac is turned on and it makes a grinding or maybe rubbing noise. When the fan motor stops and the blades are still turning the noise stops. We thought it was hitting or rubbing up against the shroud.

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  • smcclendon Sep 26, 2009

    I'm not positive how the motor attaches to the casing it sits in within the shroud (not sure how to spell)...could this possibly be lose? I cannot physically see the blades rubbing anything.

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  • Master
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Remove the fan from the motor to see if the noise stops. If the motor is still noisy, take it back to wherever you bought it for another unit. Sometimes, the rotor of the motor moves end-wise during running under power and cause interference with the fan.
The temperature sensor near the thermostat may be malfunctioning and not turning the fan on (through the computer) when the temperature comes up to normal.

Posted on Sep 26, 2009

  • drallim Sep 26, 2009

    Disconnect the fan shroud so that it can be pulled back enough to observe the fan operation (turn the A/C on). It it runs quietly now, examine the radiator fins for signs of the fan clipping them. You may have to set the motor back into the shroud further to get it away from the radiator. The fan blades may have a little 'flash' on the edges from the molding operation--just trim it off with a sharp utility knife.

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  • Master
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You need to find it, you are right ,something is rubbing. the fan wont come on with the a/c off until its pretty hot. 225f or so I think.

Posted on Sep 26, 2009

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