oo0- mine runs when my truck is off too... does sound cool . i guess ill raise my temp to 190... thx! il ask him bout the probe.

 

Do you have a scanguage or a tool to read the exact water temp?

Without that it might be a little difficult. Pat did not have one either, but he also has an indicator light on the dash that lets him know when the fan is on. I am sure this aided in the tuning of the thermo because he was able to tell if the fans were running when he was on the highway

 

Scott: Actually my multimeter (volt meter) has an infrared thermometer on it, so i can check real time temps at the upper radiator hose, but I didnt want to step on your scangauge loving toes

Soul: I wouldnt use those plastic fan mounts for long. They killed my stock radiator in a year and half. Also your radiator is aluminum not steel. The probe can be mounted like that, but i prefer to use it through the radiator for a more consistent read, but as long as you have the controller tuned correctly it really doesnt matter.

 

So I got a Mark VIII fan off ebay. Its two speed but I will only be using the 4500cfm speed. The fan now has brackets and is all wired except...

I purchased a wire harness with a 185 degree switch. It is not a probe though. The switch is a cylinder and is 2 1/4" long and uses a 11/16 wrench. It has a cylinder sensor and a small bolt with a washer and nut on the other side.

I would post a pick but I am a wicked newbie and can't figure that out either.

I have no clue where to put this sensor. Can any one help me out?

 

upload the picture to your gallery and i can post it up here on this thread for you.

https://www.f150online.com/forums/all_albums.php

 

okay so what i should do is use strips of steel.. and drill bolt hole into the top of my radiator..?

 

aluminum strips, and yes the top support and bottom support of the radiator

 

oo0 okay good.. ill get one that when i got some free time.. hey all day yesterday my fans didnt turn on but my engine didnt over heat... is this normal??? its cold out....im just scared im ruining something.. i think that im gonna put the probe into the radiator...

 

It cost some money buy buying a scanguage II is a worthwhile addition IMO when doing mods like this. If memory serves it will cost about $150 but it allows you to see your exact water temp. I was able to tune the thermo on the fan down to the exact degree I wanted it to come on as well as watch the temperature in traffic.

The guages Ford used is nothing but a glorified dummy light IMO. My temp when I had my mechanical fan on would go from 193 to 207 and the guage would never even move. Now when I notice it is getting up to 198 I turn on the second fan and cool things down before it gets to the 200's.

Sometimes in traffic without the A/C on I will let the main fan cycle on and off but sometimes it still needs the second fan to remain below 200 in stop and go in the texas heat.

 

oo0 cool dude! thx for the input!!!!!!!

 

Forgot to add the scanguage II also allows you to monitor
-trans temp
-engine load
-Air intake temperature
-Real time MPG
-Average MPG
-Torque at the converter
-Hp at the converter
-Vehicle speed
-Engine RPM
-Battery Voltage
-Throttle position
-Engine timing
-Open/Closed loop status
-Manifold pressure
-Fuel rate (Gallons Per Hour)

And it also is a code reader

 

Like this:

 

For a more accurate temp reading from the t-stat switch, slip the probe into the coolant inlet to the rad......the probe will be submersed into the coolant itself instead and won't have fluctuating readings like it would through the rad. Good time to do a flush as well since you are going remove the hose.

 

wow primerib, thats a good suggestion, i might have to try that

 

Thanks Pat.

Considering how thin the wire is attached to the probe, you won't have any leakage problems....knock on wood.