Does this make sense?

[Fast68back]

Installing my radiator fans, the kit comes with a temp switch that is adjustable. I'm looking at what I have and compare it to the picture on the website:



I realize that I'm missing something as all I have is the temp switch. So I shoot an e-mail over to the vendor

"I purchased a dual electric fan kit from       a few months ago. I am finally getting around to installing the fans and realized that the kit did not have the mounting bracket for the sensor, there is also not a faceplate or anything to tell what the temp setting is. I did not see a knob in the photo, does the kit come with one as I did not get one of those either. Is it possible to get these sent to me?
 
I assume it is the bracket in this photo on your website: (I copied the phot from above into the e-mail)

I receive three replies


First reply:

Rick,
There is not normally a faceplate or knob.  I believe Radio Shack has a knob with a set screw that would work.  I will send you the bracket for the thermostatic switch. 
Thanks


Then the second:

Rick
After further review…… I learned something today……WE DO Have a knob that will work on the switch.  I am including it with the relay-switch bracket along with the mounting screws.  I am putting it in a mail pouch and mailing it to you.
Thanks

Soooo, I reply

Just curious, if there is no faceplate, how does one tell what the temp setting is?

and get the 3rd reply

The temp setting will vary from rad to rad according to amount of air flow, compartment temp etc.  that is why it is adjustable to be able to tweek it where you want the fan to come on at. 


Am I missing something here? Do I wait until the cars temp gauge reaches say, 180 then adjust the switch until it kicks on? As simple as this seems, I'm kinda stumped.

[Midlife]

If you're talking about what temperature to adjust your fan to kick on, then yes, it is somewhat a matter of trial and error.  Setting it too low means it will always be on; setting it too high means that it will be on only a short time, leaving the overall average temperature too hot.

I would recommend that the kick-on temperature be about 10* above your thermostat and kick-off at the thermostat temp as a starting point.  I'm just guessing, though...

[daveSanborn]

I would recommend that the kick-on temperature be about 10* above your thermostat and kick-off at the thermostat temp as a starting point.  I'm just guessing, though...

That's about right...

My intake mounted fan sensor is pre-set to energize the electric fans at 190 and de-energize and 175.  This is running with a 180 t-stat.

[09Frank65]

That's about right...

My intake mounted fan sensor is pre-set to energize the electric fans at 190 and de-energize and 175.  This is running with a 180 t-stat.

Dave - I have the same setup and have one question.

If the engine thermostat regulates the manifold to 180 and the fan thermostat sits in that 180 manifold, then when does the fan ever shut off?

Mine runs pretty much continuously, even when breezing down the freeway.  I've actually considered switching to an external, radiator mounted switch just to see if it would turn off.

[66gt350]

That's about right...

My intake mounted fan sensor is pre-set to energize the electric fans at 190 and de-energize and 175.  This is running with a 180 t-stat.

That's about the same temp range that I have my fans coming on and off at, but I'm using the efi computer as the controller.  This time of year the fan is normally off until I'm sitting at a stoplight for awhile, then the fan will kick in until I get moving and the temp drops.

-rob

[tarafied1]

That's about the same temp range that I have my fans coming on and off at, but I'm using the efi computer as the controller.  This time of year the fan is normally off until I'm sitting at a stoplight for awhile, then the fan will kick in until I get moving and the temp drops.

-rob

my probe in the radiator works about the same, fan rarely runs unless I'm sitting still for a while. It kicks off pretty quick when I start moving again.