- - Fan question
(https://www.cherokeeforum.com/f2/fan-question-242882/)
EEVEE
03-08-2018 05:11 PM
Fan question
So quick question. Is there any benefits to leaving your electric fan run a few seconds when shutting your jeep or car off or is it just wasting energy.
jpz
03-08-2018 05:15 PM
In my opinion it is just a waste of energy.
00t444e
03-08-2018 05:51 PM
With the engine off the water pump isn't pumping anything so leaving the fan on doesn't do much.
EEVEE
03-08-2018 06:14 PM
thats what i figured only reason i see is maybe if you have heat soaking issues itll blow away some hot air but still
firebane
03-08-2018 06:32 PM
You could throw a small capacitor inline to the 12v which lets the fan run for a bit then stops.
cruiser54
03-09-2018 07:20 AM
It will contribute to climate change.
BlueRidgeMark
03-09-2018 03:01 PM
Originally Posted by firebane
(Post 3472511)
You could throw a small capacitor inline to the 12v which lets the fan run for a bit then stops.
A capacitor inline will prevent the fan from running at all.
A capacitor to ground will keep the fan running for a bit, but it would have to be a massive capacitor to keep it running for long enough to do any good.
In fact, it would have to be pretty big to keep it running even long enough to notice it.
If you are having boil-over problems after shutting down, yes, having your fan run an extra minute or two can be beneficial. To do that you need to build a timer circuit. It's not hard to do. Or you can buy one ready made.
But first make sure your cooling system is in good shape. If it is, you really shouldn't need anything else.
