Question about adding an Electric Fan
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Question about adding an Electric Fan
I have an 81 RX7 Drivetrain in my car. The previous owner removed the clutch fan and installed some weird temp sensor set up. Problem is I cant find a correct replacement sensor for the type he installed. Im trying to find somewhere to mount a regular coolant temp sensor to turn the fan on. I saw there's a sensor in the bottom of the radiator what does that do? Could I tap that some how? I was looking to do a relay and use the sensor to ground out the 85 terminal of the relay.
#2
RX for fun
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Very simple. Go to summittracing and buy a fan switch and an fog light or automotive relay. I cant remember the spec on my fan switch but i think it opens at 195 and close at 170. Fan switch can be mounted behind the water pump housing or t-stat housing (easiest one to do). connect the relay's 85 terminal to fan switch and on the same terminal, run a wire to the cabin to a 2-prong toggle switch (other terminal to ground) so you can have by-pass switch...in the event fan switch fail, you can still manually turn on the radiator fan.
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Do I have to drill and tap for those locations? Or do either of them already have an opening.
I was trying to avoid that. I found these adapters made by Flex A Lite you put them inline with the radiator hose and they have a bung in them for the sensor to thread. I've heard it's better to have your sensor in the lower hose. Is that true?
I was trying to avoid that. I found these adapters made by Flex A Lite you put them inline with the radiator hose and they have a bung in them for the sensor to thread. I've heard it's better to have your sensor in the lower hose. Is that true?
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Heres the adapter I was looking at this one is made by Autometer but looks a little nicer. http://www.summitracing.com/parts/atm-2283
If it wasn't pouring outside Id go look to see if those spots are tapped on the block.
If it wasn't pouring outside Id go look to see if those spots are tapped on the block.
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Heres the adapter I was looking at this one is made by Autometer but looks a little nicer. http://www.summitracing.com/parts/atm-2283
If it wasn't pouring outside Id go look to see if those spots are tapped on the block.
If it wasn't pouring outside Id go look to see if those spots are tapped on the block.
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Ive seen the bulbs before, are they reliable? Im driving the car everyday so that is a big factor.
I went outside this morning and aw the sensor behind the water pump, what does the one thats in there do?
I went outside this morning and aw the sensor behind the water pump, what does the one thats in there do?
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#9
i run my fan all the time for now, though i'm going to be looking into setting it up one of these ways on a temp sensor eventually(probably over this winter) as of now i just have a switch in the car that i turn on/off when i start and stop the car
#11
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Ok i have a aluminum rad thats v mounted with fan in front as a pusher. I have used a probe type that i got at autozone for 3 years no issues at all. They have 2 types one thats adjustable and one thats not i went with the non adjustable because the probe was made so you used your own wire. The adjustable one they carry has a hard wired probe and the wiring is super thin. The non adjustable opens at 185 which i found to be perfect for my setup. Best of all the non adjustable is only 19 bucks. If you have any other questions i will help all i can.
#12
carb whisperer
if you use the push in style prob WITH an aluminum radiator the location of the bulb is critical. Youll want it as close to the radiator inlet as possible because the probe will actually cool off where the water (coolant) isnt the hottest, causing the fan to come on late, and not run long enough to actually cool the coolant.
The problem has only been with aluminum radiators though in my experience, since the surface of the radiator seems to cool off much faster than the actual coolant when the air is moving over it.
The problem has only been with aluminum radiators though in my experience, since the surface of the radiator seems to cool off much faster than the actual coolant when the air is moving over it.
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