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post #1 of 9 Old 11-04-2011, 01:36 PM Thread Starter
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Fans staying on - F430

I noticed that the fans are staying on almost all the time even in relatively cold weather. Can other 430 owners confirm this behaviour or should I check my thermostat relays?

Thanks!
Andy

Last edited by griffith; 11-04-2011 at 01:49 PM.
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post #2 of 9 Old 11-04-2011, 01:58 PM Thread Starter
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Great, 3 posts and already managed to mess up the thread title...;-) This was supposed to be for my introduction post and not this one...
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post #3 of 9 Old 11-04-2011, 02:32 PM
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Andy- Not sure about F430s, but my 575M fans are on when you think they would not be on. Most likely depends on whether or not the A/C/climate control is on and what the external temperature is. On most cars, A/C on requires at least one fan to be operating. On Ferraris, if the temperature is below 59F/15C at start, the A/C compressor is not engaged and the fans will likely not run until the engine comes up to temperature.

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post #4 of 9 Old 11-04-2011, 02:39 PM
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Originally Posted by griffith View Post
Great, 3 posts and already managed to mess up the thread title...;-) This was supposed to be for my introduction post and not this one...
Looks like the perfect introduction.

Great way to get an owners tag on FLife

Welcome and enjoy!
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post #5 of 9 Old 11-04-2011, 02:39 PM Thread Starter
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Terry, thanks for the answer. AC is rarely on, what is very different to my previous 360's behavior is that when I turn the engine off and then turn the key back to ignition position the fans will only stop running after about 3 minutes even if I didn't push the car before coming to a stop.

While this is not a bad thing in itself it still makes me wonder if it's normal.
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post #6 of 9 Old 11-04-2011, 02:43 PM
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Griffith- That sounds like a good question for Stef. I have had cars like VWs where the fan runs after you shut down. Makes no sense since the water is not moving after shut-off because the water pump has quit. When I shut down my F430 contemporary 575M, it is off and the fans quit.

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post #7 of 9 Old 11-04-2011, 05:09 PM
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Hi Andy,

Welcome here Nice question introduction your post will make a lot of wind Ok, seriously now. When you switch off the ignition, the fans should always stop. When the coolant temp is equal or above 90C/200F, even if you switch back on the ignition, the fans will start again. This coolant temperature can be maintained for quite a while, well more than 3 minutes because, as Terry said, the coolant isn't circulating any more when the engine is stopped. So the fans will try to cool off only the coolant located in and nearby the radiators, not the entire coolant circuit (which contains 17.5liters of coolant!). I don't think there is something to worry about. But if you feel more reinsured, there is nothing bad to leave the fans running for a couple of minutes after you stopped the engine. Just keep in mind that these fans drain quite a lot of current.

Regarding your first question, even with cold weather, with city driving, the fans will be running almost permanently. But as soon you are cruising at a normal speed of let say >=50 miles/h, your temperature gauge should drop below 90C/200F and the fans will stop.

Hope this helps,
Stef

Last edited by StefVan; 11-05-2011 at 04:38 AM. Reason: Corrected 10l -> 17.5l
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post #8 of 9 Old 11-04-2011, 08:15 PM
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Originally Posted by StefVan View Post
Hi Andy,

Welcome here Nice question introduction your post will make a lot of wind Ok, seriously now. When you switch off the ignition, the fans should always stop. When the coolant temp is equal or above 90C/200F, even if you switch back on the ignition, the fans will start again. This coolant temperature can be maintained for quite a while, well more than 3 minutes because, as Terry said, the coolant isn't circulating any more when the engine is stopped. So the fans will try to cool off only the coolant located in and nearby the radiators, not the entire coolant circuit (which contains 10liters of coolant!). I don't think there is something to worry about. But if you feel more reinsured, there is nothing bad to leave the fans running for a couple of minutes after you stopped the engine. Just keep in mind that these fans drain quite a lot of current.

Regarding your first question, even with cold weather, with city driving, the fans will be running almost permanently. But as soon you are cruising at a normal speed of let say >=50 miles/h, your temperature gauge should drop below 90C/200F and the fans will stop.

Hope this helps,
Stef
Excellent, Stef. Even I can understand such clairvoyance. Thank You. w/ smiles Jimmy
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post #9 of 9 Old 11-05-2011, 03:48 AM
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Originally Posted by tazandjan View Post
Griffith- That sounds like a good question for Stef. I have had cars like VWs where the fan runs after you shut down. Makes no sense since the water is not moving after shut-off because the water pump has quit. When I shut down my F430 contemporary 575M, it is off and the fans quit.

On both the F50 and XJR-15 the fans all run for 3-5 minutes after the car is turned off.
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