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06-09-2002, 11:04 AM | #1 |
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Electric Fan switch location
I have found an switch and I was wondering if I could put
it in on the intake manifold? (See picture) Or is the best location on the radiator? Thanks. Cya, Edmond
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06-09-2002, 11:06 AM | #2 |
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Sorry, but there was no picture...
I hope this time it works..... Cya, Edmond
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06-09-2002, 11:21 AM | #3 |
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I think you'd be better off with the switch on the radiator. The fan is intended to cool the water in the radiator based on its temperature. The water in the manifold is often a completely different temperature... both from the fact that it is separately regulated by the thermostat and because it is inherently a different temperature since it's in the engine and hasn't had a chance to cool off as much as the water that's traveled to the radiator.
Just my 2 cents. I hope it helps, Kenneth
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06-09-2002, 12:05 PM | #4 |
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I would put it in one of the heads, or you can put it in the intake. I have mine in one of the heads.
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06-09-2002, 09:59 PM | #5 |
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I would put it in the intake or a head.You want to keep track of "ENGINE TEMP" not radiator temp.
Right?
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06-09-2002, 10:03 PM | #6 |
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I guess I missed the point of the original question. I thought you were talking about the thermal switch that cuts on and off the electric fans.
If so, the fans are there to regulate the temperature of the fluid in the RADIATOR. There's no direct correlation to the fluid that's in the engine. The thermostat in the manifold is responsible for regulating water to the engine. And when it needs cooler fluid, it opens up and expects the appropriate temperature fluid from the radiator. Kenneth
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06-09-2002, 10:22 PM | #7 |
its all about the +6 inches
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The fan is to cool the coolant in the radiator, therfor, it needs to know the temp of the coolant in the radiater, not the engine.
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06-10-2002, 04:24 AM | #8 |
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Why is the sender for the temp. gauge threaded into the head then?
If you have a working coolant system the temp. in the rad. (inlet) will be approx. what temp. the thermostat is. I personally don't care what the temp in the rad is as long as the temp in the engine is within normal limits. If your thermostat malfunctions the temp. in the rad can be drastically different from the eng. temp. So if your running a temp. controlled fan and the rad temp is normal but the eng temp is up the fan may shut off because the rad. temp is o.k.(did that make sense?) Anyway I threaded my fan thermostat in the head.
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06-10-2002, 08:10 AM | #9 | |
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Quote:
But now we're talking about 2 different things. The temp gauge is designed to tell you how hot the ENGINE is. The fan switch is designed to turn on the fan. And in your example, if the thermostat is stuck (closed), then it doesn't help one bit to have the fan switch on the manifold. You're correct that the two temps can be drastically different. That is precisely why there is a thermostat in the manifold... to regulate that difference. Operating temp for the engine is different than the reservoir fluid of the radiator... hence warmups when you start your vehicle.
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06-10-2002, 08:33 AM | #10 |
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It needs to go into the radiator. As noted previously, water in the motor is controlled by the thermostat. The water in the radiator is cooled by the fan. Take for example a cold 27 def F day. The engine temp is 195 deg because of the thermostat and you turn the fan on at 180, but the temp in the radiator is already 120 degrees. The fan runs cooling the water even further then the thermostat opens releasing 50 degree COLD water into the 195 deg engine, shocking the block causing localized shrinking of the cast iron and cracking the block... This is an extreme example, but the fan switch goes in the RADIATOR and not the block. It is more important in cold weather when the temp difference between the radiator and the engine is highest. Also having it in the radiator should let the engine warm up faster.
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06-10-2002, 08:55 AM | #11 |
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All great theroys but I don't think it makes a rats a$$ difference where you screw it in. As long as it in coolant it will work. Hell their is more temp differance between the top radiator hose and the bottom one, than probably any where else in the system. And I have worked on GM cars were the factory one is in the head.
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06-10-2002, 09:15 AM | #12 |
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Rat's ass...that's funny.
I was just going to say G.M. put's them in the head.
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06-10-2002, 10:42 AM | #13 |
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Did I hear Somebody say HEAD!!!!!! LOL....
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06-10-2002, 12:41 PM | #14 |
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Confused?
YEPPERS!!!!! I"M CONFUSED!
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06-10-2002, 07:24 PM | #15 | |
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Quote:
Now, they may be incorrect, but I'm going with them since they make the things for a living. Kenneth
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06-10-2002, 08:52 PM | #16 |
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Apples and oranges. That is a sensor bulb that is designed to be mounted in a radiator hose. Here a a thermostatic switch that is designed to be mounted in the head of an f-body. I think GM built a couple of those things.
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06-10-2002, 09:10 PM | #17 |
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My fan thermostat probe is made by Painless Wiring. It is made to go in the head. That Flex-A-Lite fan thermostat probe is made to go in the radiator. I like the kind I have, it works perfect, comes on exactly at 185* and turns of at 170*. Look under the hood of any newer car and you will see, the fan thermostat probe is in the intake or head.
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06-10-2002, 09:14 PM | #18 | |
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BTW, this appears to be turning into a urinating contest, so I'm gonna bow out (and go install my electric fan switch on the radiator like the manufacturer of the product tells me in their instructions ). Kenneth
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06-10-2002, 09:21 PM | #19 |
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I'm sorry, I should have said most newer cars. Almost all GM and Ford cars have it in the intake or head.
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