Electric Fan Help

[fig865]

First off, I apologize if this info is in another thread. I've searched a while and haven't found it. I did find the attached diagram but was hoping someone could help with the parts. I know that there are popular fan assemblies out there (Taurus, Intrepid, ect.) but it's the other stuff I was hoping to find out. Has anyone kept track of part #s of these items to make it a little easier for me to do a budget fan swap?

Circuit Breaker-
Relay-
Sending Unit or Thermo Switch-

Or better yet, anyone selling these items already in a package? Thanks!

 

[Wageslave]

I would just go to your local parts store and get an electric fan controller. They come in a couple of types depending on what your thermostat is. I would recommend getting one that has an adjustable set point for on/off and has a screw in type temperature probe.

This is the exact one that I use in my car with a dual fan setup out of a 96 Chrysler Cirrus.

http://www.autozone.com/cooling-hea...r-works-electric-fan-thermostat/467214_9584_0

 

[kalidromos13]

I use a Ford Thunderbird fan and a Volvo fan controller and a BMW temp switch. You can google "Volvo Fan Controller and Ford Taurus Fans" and you will get a bunch of results. The temp switch closes at 195°F, then the fan comes on. The BMW switch is cool because it has two temps for two fan speeds.
I think i paid around $150 for everything. I cut up the electric fan shroud to fit into my stock shroud and it fits in perfect. Cant even tell its there!

 

[UNGN]

That wiring diagram appears to be from someone's "kit" and isn't that helpful for a DIY. If you don't have enough electronic spaghetti in your life, here is a dual speed/dual fan diagram I drew:

If you get a 300M fan from the junkyard, it has 2 relays attached to it that can be made into the SPDT shown, then you just need two SPST relays for the "Fan On" and "Hi/Lo switch" relays. The Junkyard usually sells 300M fans for about $35 and most junkyards have a few of them.

In low speed this setup only draws about 3 Amps, so coming on with the ignition is not a huge hit.

 

[fig865]

Thanks guys! That answered my question.

 

[fig865]

That wiring diagram appears to be from someone's "kit" and isn't that helpful for a DIY. If you don't have enough electronic spaghetti in your life, here is a dual speed/dual fan diagram I drew:
View attachment 63569


If you get a 300M fan from the junkyard, it has 2 relays attached to it that can be made into the SPDT shown, then you just need two SPST relays for the "Fan On" and "Hi/Lo switch" relays. The Junkyard usually sells 300M fans for about $35 and most junkyards have a few of them.

In low speed this setup only draws about 3 Amps, so coming on with the ignition is not a huge hit.

Where would be the best place to get the SPST relays if I found a 300M fan setup? And then I would also need to know what Temp sensor to use right?

 

[UNGN]

Where would be the best place to get the SPST relays if I found a 300M fan setup?

Any Auto parts store like O'Reilly's or Autozone will have Relays/harnesses. They are Cheaper off E-bay. You want 30 Amp relays. Many harnesses use different color wires than I have shown. The wire colors in my diagram correspond to the colors/pole numbers marked on the relays.

 

[454GrandPrix]

My Grand Prix is using a junkyard Taurus fan. I power it with a junkyard Volvo fan relay, and am only using it in the LOW speed setting. For the time being, I have a toggle switch on the dash to send the (low-power) ground signal that trips the relay and turns on the fan. Since the Volvo relay handles the power, I did not need to buy any other hardware other than the toggle switch which I had lying around. (I did not install a dedicated temp sensor to do this because I will soon install FiTech EFI, and it can send out the required ground signal for me.)

BTW: SPST relays are as common as dirt. You can find them at every AutoZone/O'Reilly's/etc store, plus Wal-Mart, and so on. I've installed a few of them underhood for other functions.

 

[UNGN]

And then I would also need to know what Temp sensor to use right?

25036371 is the 86-87 GN Switch that should go to ground about 195 degrees. You can get these on Ebay or get the current equivalent like an AIRTEX/WELLS 1T1011.