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Old 03-27-2010, 12:20 PM   #1 (permalink)
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At what temperatue on the gauge is the fan set to come on? Can't help but notice my fan only comes on when the AC is on, thought this was normal and the car just runs cool but now I'm starting to think wait a minute could my cooling fan sensor be defunct?
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Old 03-27-2010, 01:14 PM   #2 (permalink)
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QUOTE (Big B @ Mar 27 2010, 08:20 AM)
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At what temperatue on the gauge is the fan set to come on? Can't help but notice my fan only comes on when the AC is on, thought this was normal and the car just runs cool but now I'm starting to think wait a minute could my cooling fan sensor be defunct?
Possibly so. Turn on our car and let it idle if you see your fan runs. Watch the temp guage, if it goes more than half and your fan does not kick in, tun on the ac and then notice if the temp goes down. If yes, your fan switch is bad.
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Old 03-27-2010, 01:53 PM   #3 (permalink)
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QUOTE (Big B @ Mar 27 2010, 12:20 PM)
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At what temperatue on the gauge is the fan set to come on? Can't help but notice my fan only comes on when the AC is on, thought this was normal and the car just runs cool but now I'm starting to think wait a minute could my cooling fan sensor be defunct?
Cover your grille first with a towel or small rug to restrict air flow.
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Old 03-27-2010, 01:57 PM   #4 (permalink)
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Will try it next time. Where's the fan switch located any how, general vicinity? Is this is a big problem seem's like quite a few people have had this problem on here. I'm banking its been like this awhile, but I'm never really in stopped traffic and my A/C is usually always on.
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Old 03-27-2010, 03:16 PM   #5 (permalink)
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I drove my 79 Civic across country once in 81 and while driving across the Texas panhandle I heard this noise I hadn't heard before. Thou and behold it was my cooling fan. My guess is you are fine unless the temp gauge gets to the hot mark and the fan doesn't come on.

My Sonata never gets to halfway on the temp gauge.
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Old 03-27-2010, 03:33 PM   #6 (permalink)
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QUOTE (craigbrooks @ Mar 27 2010, 02:16 PM)
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I drove my 79 Civic across country once in 81 and while driving across the Texas panhandle I heard this noise I hadn't heard before. Thou and behold it was my cooling fan. My guess is you are fine unless the temp gauge gets to the hot mark and the fan doesn't come on.

My Sonata never gets to halfway on the temp gauge.
I thought because we have aluminum blocks and radiators they disipitate heat fast. I have 99k miles on mine. Had my radiator flushed at dealer at 75k and then just at 99k miles I drained and filled the radiator with Hyundai coolant and distilled water.
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Old 03-28-2010, 04:45 AM   #7 (permalink)
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Where is the cooling fan switch? I'm on HMA service I can't find it under cooling, engine electrical or mechanical, no search function.
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Old 03-29-2010, 12:38 AM   #8 (permalink)
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Pretty sure most all vehicles are like that. One fan's for the rad, the other's for the A/C condenser.
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Old 03-29-2010, 01:58 AM   #9 (permalink)
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QUOTE (DarrenCax @ Mar 28 2010, 08:38 PM)
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Pretty sure most all vehicles are like that. One fan's for the rad, the other's for the A/C condenser.
Correct.
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Old 03-29-2010, 12:55 PM   #10 (permalink)
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Correction, there is only one cooling fan and they share two functions.
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