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Post by TheLoveThatNeverDies on Sept 7, 2005 12:05:28 GMT -6
I've been wanting to modify my cooling system to allow me to manually actuate the cooling fans, while not losing their original functionality. I think I've come up with a circuit that ought to do the trick. I'm no electrical engineer, but it looks solid to me. What do y'all think...  I'd definitely like to hear whatever feedback anyone can offer. I really hate frying stuff ;D -Shawn |
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Post by omegaic on Sept 9, 2005 1:41:13 GMT -6
Stupid question...why do you want to manually control the fans? If the thermostat is working properly, then operating the fans when they are not necessary would just put more load on the engine. Just curious!  |
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Post by TheLoveThatNeverDies on Sept 9, 2005 2:14:16 GMT -6
I know that it was the intent of the engineers' design, but I just don't like how hot the engine gets before the fans kick on. I'd like to see them activate at under 200*.
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Post by kobalt on Sept 11, 2005 10:55:33 GMT -6
Looks good to me but replacing the thermostat with a colder one might just do the trick without the hassle.
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Post by SupaStealth on Sept 11, 2005 11:13:29 GMT -6
Good luck finding a cooler thermostat than stock  . Looks like a good schematic to me |
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Post by Snoman002 on Sept 11, 2005 14:26:48 GMT -6
A colder thermostat won't turn the fan on any earlier and if the fan is turning on already it is unlikely that a cooler thermostat will do anything at all.
I would think that you would need to trick thecomputer into thinking the engine is running hoter than it already is or have the computer program changed to turn the fan on earlier. OF these I would have the computer tuned, tricking the computer into thinking the engine is running hoter will change more than when the fan comes on.
Since there is already a relay to turn the fan on why not just find the current activation terminal and give that power with a switch? You might need to put a diode in the current wire that runs to the computer but that is easy and diodes are really cheap.
Just find the wire on the relay from the computer and run a wire with a switch on it form that to the positive side of the battery. Should cost no more than a $3. Just make sure you find out if the fan circuit is a positive switched system or a negative switched system, if it is a negative switched system then run the wire to the negative terminal of the battery.
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. Looks like a good schematic to me
