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Old 11-10-2004, 08:39 PM   #8
Katoum
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Joined: Feb 2004
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May be as simple as the temp sensor in bottom of rad that opens and closes the ground circuit to the fan motor is getting out of spec, or acting irregular, I had one on my RFS525 do the same thing. Finally quit altogether, simple ten minute job to change, and not very expensive. You could even pull it out and test in pot of water on the stove with a candy thermometer, and a ohm meter across the leads and check to see if it consistantly opens and closes at the same temperature. Just make sure you suspend it in the pot and not lay it on the bottom or you may damage it.
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