How To Wire An Electric Radiator Fan with Thermostat And Ignition Off || Jeep Mods E46

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Why We Installed Electric Fan

Here we go over how we wired an electric fan with thermostat control that turns only runs with the ignition on. We are installing this because after we installed AC, we now have heat issues while not moving. Once driving down the road the heat issue will go away due to the airflow of movement, but this is not a good solution, especially on the trail.

How To Wire An Electric Radiator Fan with Thermostat And Ignition Off

Tools And Parts Used:

radiator fan switch relay diagram

radiator fan switch relay diagram

Improvements After Electric Fan Install

We did not install an electric fan for more HP, Torque, or better MPG, but we did see improvements even if sight both with the New AC on and off. We didn’t Dyno the jeep, but the in the seat acceleration from a stop had a noticeable difference with our little 2.5L Jeep engine. The MPG just with the little driving we have been doing has improved about one MPG, with fuel prices right now every little bit helps.

What We Have Done To This Jeep To Improve MPG And Performance

The fan is not the only thing we have done to this Jeep, we have a lot of YouTube projects, so your results may vary from ours. We did the greatest performance gain project on this Jeep was the gear change going to 4:88 from 4:10. We have also replaced every senor, filter, plug, etc in Youtube videos making this little jeep run great.

Jeep Playlist:

Jump To Topics In Video:

  • 00:00 How To Wire An Electric Radiator Fan with Thermostat And Ignition Off
  • 03:50 Removing A Radiator To Install Aftermarket Electric Fan
  • 08:43 How To Mount Electric Aftermarket Fan To Radiator
  • 11:51 Install Additional Temperature Switch And Wiring In Relay and Fuses For Electric Fan
  • 15:36 How To Use JB Weld, We Use It To Fix Radiator Mounts
  • 16:14 Install Radiator With Aftermarket Electric Fan Mounted To It
  • 17:09 Going Over Aftermarket Electric Fan Wiring After Its All Run
  • 18:27 Testing Our Newly Installed Electric Aftermarket Fan With Temperature Switch
  • 20:03 Cleaned Up Wiring For Electric Fan Install On Jeep YJ
  • 20:43 Finally Thoughts Of Jeep Project
  • 23:17 Outtakes How To Wire An Electric Radiator Fan with Thermostat And Ignition Off

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Christopher Redding

I was never a writer, constantly failing English in school, I felt that writing was not for me. Over 20 years later Danielle and I started a blog, weird right. Danielle loves to write and supports me in my own writing as she creates her own content on this blog. We got our start on YouTube "ChrisDoesWhat" to improve ourselves, we continue to help others. Then we expanded our YouTube Channel with this blog, it seemed like a logical next step. We continual are looking for ways to improve ourselves, who knows where the journey will take us, what our next steps will be. We met in Washington State at Fort Lewis Army base and got married 3 months later in 1997. We have traveled the world at first only because of the Army, later we traveled on our own cause we loved it. We have two adult size boys, one in the AirForce, the other in HighSchool and taking college classes.