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Author Topic: Temp when radiator fan cuts in  (Read 3074 times)
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JoeBeta
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« on: March 22, 2011, 11:19:29 AM »

Hi just a quick question.   Now that the outside temperature is above freezing,
At what temp should the radiator fan cut in at.  When sitting in traffic, my temp gauge reads just over 3/4 before fan cuts in.
Is this normal???   I replaced the fan sender unit in the radiator last year (With a Betaboyz Item)
thanks Joe
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Thotos
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Theo Kyriacou


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« Reply #1 on: March 22, 2011, 11:46:08 AM »

My Trevi is the same so I'll vote that this is "normal"  Wink Cheesy
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Theo Kyriacou
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« Reply #2 on: March 22, 2011, 11:51:53 AM »

3/4 at the most for mine.
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Graham

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rossocorsa
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« Reply #3 on: March 22, 2011, 12:33:40 PM »

it's when it doesn't cut in that it's an issue it's good practice to have a manual override wired via  a spare switch, I have used that facility to predict ahead when hitting a traffic queue
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JoeBeta
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« Reply #4 on: March 22, 2011, 03:17:58 PM »

Thanks Guys,  Was considering an over ride switch,  I always get a bit twitchy when the temp gauge rises high.
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Thotos
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Theo Kyriacou


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« Reply #5 on: March 22, 2011, 03:22:37 PM »

The problem may be with the water thermostat. If it's not opening when it should then hot water is not allowed to flow into the radiator to trigger fan switch. If that's the case, fitting an override switch will achieve nothing. Check that the whole radiator is hot when the temperature gauge is just above half way.
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Theo Kyriacou
JoeBeta
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« Reply #6 on: March 23, 2011, 09:44:51 AM »

I did check radiator and system whne temp got up, the water is circulating OK, and the whole system is getting hot, just thought it was getting on the warm side when the fan cuts in??
Had a couple of near misses last summer??  as fan wasn't cutting in, it was a dodgy wire in the end (what a surprise)
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