Question about Subaru Legacy

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I have a 1993 Subaru Legacy. The fans only come on when the AC is on, otherwise they don't come on and it starts to overheat. It's fine as long as the ac is on but I don't want to have to run it all the time. Any ideas about what the problem might be?

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There is a relay under the hood on the drivers side. There are 3 relays together. All three control the fan. One or two of the relays are not working. I believe that the two on the right are for the fan temp control. I would suggest go buy one. And let the car warm up and pull all three out. And put the new one in all three places or until the fan comes on. The other one will turn the fan on when the car gets hot. And one controls when the AC is on.

Posted on Oct 07, 2010

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Your main engine fan may not be coming on,, check your fuses under the hood just to be sure a fuse isn't blown 1st if not that the main fan maybe bad. suggest you check the main fan temp. sensor which makes the fan come on when the engine reaches a certain temp. easy to check if fans good, just throw positive volt to fan in blue wire at fan if not work, fans bad. hope this helps!!

Posted on Oct 07, 2010

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Offhand it would appear that the radiator fan is not working. In some versions, either the A/C or the heater must be turned on for the radiator fan to work. In some other incidents, the fan utilizes a clutch. Common design makes use of the inverse property of silica oil to serve as the clutch. Still others have a relay that actually does the switching on of the fan. Of course it would be to your advantage to likewise check the temperature sensor on the radiator.

Good luck and Thank you for using FixYa. Happy Holidays.

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