E- Fan Temp Switch

[brian.]

i am looking to install an electric fan in place of the oem fan. i am currently looking at a few kits from summit. i would rather use a thread in sensor, rather than the probe that gets put in the radiator (between the fins) but did not know where to put it. I would prefer to not "splice" a piece of pipe with a threaded bung into a radiator hose, and WOULD like to use an existing threaded hole if possible. i believe the sensor comes with a sensor that is 1/8 npt. if anyone has a pic, or knows where i can hook this sensor to, i would appreciate it.

also i plan on setting the fan to run at 180, and shut off at 170. lmk what you think.

CAR: 1995 240sx (base), stock for now, plan on boosting. (have all parts, but want to get a few supporting things done 1st.)


Brian.

[jhec23]

You can get the temp switch with the 1/2 fitting and put it on the coolant hose going to the heater or intake.

[zylvia213]

Im running flex-a-lite fans on my s13 SR. I used temp sensor from stock s13 KA motor and got 2 BOSCH alarm relays. Fans kick in at about 180-190. Works great

[johngriff]

Im running flex-a-lite fans on my s13 SR. I used temp sensor from stock s13 KA motor and got 2 BOSCH alarm relays. Fans kick in at about 180-190. Works great


Have a diagram for this? Sounds cool!

[DALAZ_68]

Im running flex-a-lite fans on my s13 SR. I used temp sensor from stock s13 KA motor and got 2 BOSCH alarm relays. Fans kick in at about 180-190. Works great


u might wanna add that is only comes in the SOHC models on the lower radiator hose :wavey:

[LA_phantom_240]

i would rather use a thread in sensor, rather than the probe that gets put in the radiator (between the fins) but did not know where to put it.

Good call. They don't work. Trust me on this one. :Ownedd:

[NemeGuero]

You can use the ECU water temp sensor.
At least its what I'm using for my Greddy MSS.

[undesiredshoe]

Good call. They don't work. Trust me on this one. :Ownedd:

Well trust me, they work. At least maybe it works in my miracle car. Switch on temp is kinda high though, 200+ iirc. But luckily, I have a free fan controller that im going to be using soon, oh yea, its "stock" too.:bow:

[LA_phantom_240]

Well trust me, they work. At least maybe it works in my miracle car. Switch on temp is kinda high though, 200+ iirc. But luckily, I have a free fan controller that im going to be using soon, oh yea, its "stock" too.:bow:

...tell that to my headgasket.

[chituntang]

Well, I have those too, but the catch is I can adjust when it comes on, so it is fine. It sounds more like your fan is not kicking on at the right temp. It is not as good as it is not taking water temp, but the rad. temp. So I will switch my controller later. But right now it works wonderfully.

[DALAZ_68]

Good call. They don't work. Trust me on this one. :Ownedd:

agreed...if its got cold air hitting it between the fins...its not getting a proper core temperature from within...

getting something that withing is a lot better.

[tgd89]

Actually the rad probe on my derale fan controller just died after maybe a month or two of use. Use a thread in one, it worked ok but couldn't of been too accurate.

[brian.]

so for those of you using the thread in, where are you putting it??

Thanks for all the replys.

[projectRDM]

The 'best' method I've found is to buy a Pivot fan controller. There's two models, one comes with a sender that you can put into the inlet neck on the manifold, just drill/tap behind the OE senders, the other model ties into the OE sender and reads it from there. There's some confusion when you order one since most places aren't very thorough in their description and you may get either model, but it does the job, is programmable, and includes a water temp display so you can ditch the OE gauge completely.

[NemeGuero]

The 'best' method I've found is to buy a Pivot fan controller. There's two models, one comes with a sender that you can put into the inlet neck on the manifold, just drill/tap behind the OE senders, the other model ties into the OE sender and reads it from there. There's some confusion when you order one since most places aren't very thorough in their description and you may get either model, but it does the job, is programmable, and includes a water temp display so you can ditch the OE gauge completely.

Yah, the greddy MSS ties into the OE sender from the ECU and also has a digital display.

AND its 2 stage which works great for altima fans.

Only thing that could make it more perfect is a manual bypass in case some shit goes bad but if you're smart enough with wiring you can do that anyway.

[japslapsilvia]

my 2 favorite methods, is to eithor use Greddy MSS, which i have, it uses the stock CTS signal, or use a lower radiator hose adapter, and sensor from SOHC, this is the cheapest option...use it with a 30A relay and 10amp fuse....

really simple wiring...12+ (constant or ign+ doesnt matter) to fan, via fuse
12+ to #85 on relay
ground to 86
wire from 87 to neg side of fan
wire 30 to one side of the sensor, and ground the other side.
i believe that this is correct for the wiring cant really remember off the top of my head...someone correct me if i am wrong.

[bigOdom1]

tap the water neck slap an autometer gauge in and call it a day

[NemeGuero]

tap the water neck slap an autometer gauge in and call it a day

Thats not a temp switch, thats a temp gauge. Retard.

[LA_phantom_240]

Thats not a temp switch, thats a temp gauge. Retard.

Owned.



And where can I get this two stage Pivot controller? I have Altima fans, so this would be awesome.

[aNskY]

tap the water neck 1/2"npt. done.

[NemeGuero]

http://www.racinglab.com/greddy-mss-15500600.html

heres where i got mine

they're local so I picked it up.

[turtl631]

tap the water neck 1/2"npt. done.

For what temp switch? Most I've seen are 1/8" NPT, although some weird domestic options use the larger pipe thread fittings.

[projectRDM]

tap the water neck 1/2"npt. done.

Complete fail. 1/2" NPT would be huge as fuck.

[LA_phantom_240]

Complete fail. 1/2" NPT would be huge as fuck.

Indeed. 1/4" NPT is pretty large for our small scale equipment.

[aNskY]

lol, excuse the typo. of course i meant 1/8 (he clearly said his sensor is 1/8npt)... you guys are brutal :fawkd:

[96Turbo]

does anyone know the thread size for the sensor in the SOHC lower hose adapter?? I'm looking for fan controller kits, and they all come with 3/8" sensors....whereas you guys keep talkin bout 1/8"..... I've got the SOHC hose adapter, but wanna know if i can use a 3/8" sensor without welding a bung on

[NemeGuero]

why not use the OE sender? tap it from the ECU. Its pin 85.. or 82. or some shit.

[96Turbo]

cuz i'm planning on using an adjustable temp fan controller that relies on its own provided temp sensor. I'm thinking the ECU temp sender puts out a different signal than the one with this kit......

So i ordered the kit i was gonna use from summit, and now find out its backordered. This got me thinking it could be a sign that i don't need it. S13's have a circuit built in for an A/C fan correct? Meaning it triggers the A/C fan when temp reaches a certain point and/or the A/C is turned on. Instead of dropping $40 on an adjustable kit (or $30 for non adjustable), could i plug my fans into this circuit?? I'm assuming it's relayed...but if not then i could just hook up a relay that's triggered from this circuit correct?

I'm all about low buck but effective. let me know if that would work and if i would need to use a relay or not
NOTE: (i'll be using 2 14" fans that each draw 6.7 amps)

[NemeGuero]

Yes they do but its way high. Like, I wouldn't recommend using it if you actually drive your car.

I think its 190F? My car NEVER sees that temp with my fan setup.

[96Turbo]

so how do you suggest using the ECU temp sender for a fan controller?

[NemeGuero]

If your fan controller doesn't utilize the same voltage readings as the OEM sensor, you can't use it.

So for example: the OEM sensor will read 1V for 80* and 2V for 100* or whatever... if the scaling of your controller is different, you'd have to use their sensor.

I want to go out on a limb and say that temp sensors SHOULD have the same voltage ranges but I can't say that for sure. Just use the sensor that comes with your controller.

OR
Return everything and get a Greddy MSS. haha

[96Turbo]

hmm....well really what i'd need isn't a temp sensor, but a switch. I could probably save myself a little cash by getting the switch (180* turn on), relay, fuse holder, and some wire. But then it's not adjustable.....shit i can't make up my mind

I really want a pivot with the built in LCD but i'm cheap

[LA_phantom_240]

If your fan controller doesn't utilize the same voltage readings as the OEM sensor, you can't use it.

So for example: the OEM sensor will read 1V for 80* and 2V for 100* or whatever... if the scaling of your controller is different, you'd have to use their sensor.

I want to go out on a limb and say that temp sensors SHOULD have the same voltage ranges but I can't say that for sure. Just use the sensor that comes with your controller.

OR
Return everything and get a Greddy MSS. haha

Isn't the stock sensor just a variable resistor?

[Gnnr]

Yeah, I use the Greddy MSS too. I lost the English instructions though, FRSport used to have it on their site, I e-mailed them but they don't have it. I just wanna switch it to read in degrees Fahrenheit again.

[flip3d]

The DiF fan controller works pretty good. You splice it into the coolant temp sensor and theres a dial on the DiF unit that lets you set the temp you want the fans to come on.

[NemeGuero]

Isn't the stock sensor just a variable resistor?

The gauge or the sensor? The gauge only reads 3 positions based on the input from the sensor, because the gauge sucks.

The OEM sender for water temp works pretty accurately for me.
BigBronzeRim did an awesome writeup on the install for the Greddy MSS and I still have it linked for those who want it.

Just get the Greddy Unit already. Its NOT that expensive and don't skimp on cooling.

[LA_phantom_240]

The gauge or the sensor? The gauge only reads 3 positions based on the input from the sensor, because the gauge sucks.

The OEM sender for water temp works pretty accurately for me.
BigBronzeRim did an awesome writeup on the install for the Greddy MSS and I still have it linked for those who want it.

Just get the Greddy Unit already. Its NOT that expensive and don't skimp on cooling.

Maybe I'm thinking the sensor that leads to the gauge (single wire). I keep forgetting there are two sensors.

[Gnnr]

BigBronzeRim did an awesome writeup on the install for the Greddy MSS and I still have it linked for those who want it.

I need that. I need to set it back into Fahrenheit mode.

[NemeGuero]

http://forums2.freshalloy.com/showthread.php?t=127435&highlight=greddy+mss