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electric fan

Discussion in 'Intermediate CJ-5/6/7/8' started by johneyboy03, Oct 12, 2011.

  1. Oct 12, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    Hi guys, i just destroy my radiator last weekend due to the mechanical fan that run into the radiator lot of leak.
    Just piked a 3 core cup radiator and i'm going to buy a electric fan from a ford taurus 1990 (for what i read its suppose to be the same size as the cj radiator.

    Now i wounder how i'm wiring it?

    Anybody can give me advice on that, i'm not familiar with that...
     
  2. Oct 12, 2011
    a72cj

    a72cj Member

    B.C. Canada
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  3. Oct 12, 2011
    nwedgar

    nwedgar Now with TBI!

    Newnan, Georgia
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    Yep. Contour fan will probably be a much better fit. You can buy fan controls from various manufacturers online. Google for fan control and you'll see what I mean.

    I don't have my contour fans running yet, but I hear that they pull high amps when initially turning on, you can get a controller that has two speeds and that will reduce the amount of draw.

    Search "Jeep CJ contour fan" and you'll get lots of hits, including how to wire them.
     
  4. Oct 13, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    i cannot find contour fan and for what i see its the same power comsomption both of them.
    What i want to do is to use two relay for hi/low speed with a switch in the dash.
    Does any importance if i dont have a thermostat on the fan?
    Because engine already have a mechanical thermostat so it's keeping himself the good working temp.

    What do you think about that?
     
  5. Oct 13, 2011
    farm'n Mike

    farm'n Mike New Member

    South Valley, Oregon
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    Feb 19, 2010
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    My brother installed a Contour fan in his '76 and it works and looks good, tight fit with only a little trimming. He bought an thermostatic control switch so the fan only comes on when it's needed. The engine is pretty darn quiet now when the fans are not on. I've thought about doing something similar for my '60 CJ5 but all's working fine so I'm going with the "don't fix it if it ain't broken" motto.
     
  6. Oct 14, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    ok i'm going to pick up the contour fan this afternoon...what i plan to do is to wire one fan with a relay to my ignition switch and the other fan with another relay with i switch in the dash. So one fan will always run and the other will be use as a backup fan. No thermostat simple wiring. Engine already have a mechanical thermostat so i don't think i need a complete electronic system ont he electric fan.
     
  7. Oct 14, 2011
    nwedgar

    nwedgar Now with TBI!

    Newnan, Georgia
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    I'm not an electrical guy...but...it seems to me that the way you describe the wiring the fan will come on as soon as the ignition is on. If that is true, I'm pretty sure you'll draw too much power too soon too often. I know around here you can buy fan controllers pretty cheap from the local auto parts store. You may want to consider exploring that idea. At least it would give your starting system a chance to get the motor turned before the fans kick in.
     
  8. Oct 14, 2011
    mcwall1064

    mcwall1064 New Member

    Sahuarita, AZ
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    Why not pick up a couple of temperature sending units? Depending upon your setup, one could be 185* and the other 205*. Use these to control two relays and operate each of the fans according to temperature or necessity. An indicator light or led on the dash would notify you when the fan come on and you could correlate this with the gauge temp. Setup this way you wont need to be concerned about the fan running continuously or possibly forgetting to turn on a fan manually. This would be very simple to wire as well.
    Just a suggestion.
     
  9. Oct 15, 2011
    msarge

    msarge In Progress 1974 CJ5

    Hilliard, Florida
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    Mar 18, 2006
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    I did an aluminum rad swap and added the counter fans and love it. was by far the best mod I have done. I wired the fans to be automatic or manual. Was pretty simple to do. I also added a fan temperature switch from advanced auto, it basically slides between the fins at the bottom of the radiator closest to the bottom hose input. Should be able to do a search and see my pics.


    Lee
     
  10. Oct 16, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    Yes i try to chek that with my local part store...for know have both their own switch in the dash, the are wire to the ignition so if i turn the key at off both stop.

    What will be the best is to have like some say a switch with manul auto and off.
     
  11. Oct 16, 2011
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
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    Last edited: Oct 16, 2011
  12. Oct 17, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    i seen what you're talking about but my actual set up is for two fan...so the Hayden adjustable temp i dontt ink ist gonna work because i need at least 2 30amp relay to make them work...i'm really not familliar with ajustable switch...
     
  13. Oct 17, 2011
    nwedgar

    nwedgar Now with TBI!

    Newnan, Georgia
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  14. Oct 17, 2011
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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  15. Nov 15, 2012
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    Little update for those who car about, been off-road all summer with the dual contour fan and it work like a charm. For the wiring at the moment I use 2x 30 amp contactor with two 30 amp breaker and it work fine. Both fan are manually control with two switch in the dash. So I can turn off both fan while cranking the engine or when I cross a river. Now this week-end I want to add a little control module that I buy from summit racing. The control as a probe that goes in the oem temp sending unit (my mechanical temp gage is using another hole) and I want to use it as a safety device. I can adjust it from 130 to 210 so I will set it to 210. So this way if I forget to start the fan the control module will start both fan at 210 and I want to put a small red light telling me if I forget to start the fan.
     
  16. Nov 15, 2012
    nwedgar

    nwedgar Now with TBI!

    Newnan, Georgia
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    I have a similar setup. Love the Contour fans. I thought it might not be able to keep up here in Atlanta, but I only ran a little bit hot in the height of summer...about 200-210*F, but normally my temp is pegged at 190-195*F.
     
  17. Nov 15, 2012
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    This summer i ride the jeep during warn day and engine wasn't getting more than 190 F. On off-roading i only overheat a little while trying to get out of a mud hole...
     
  18. Nov 15, 2012
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
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    My twin electric fans are wired with a relay for each fan. I use one thermal switch in the intake. This activates the fans at 210 degrees. The fans shut off at 195 degrees. This keeps the fans from coming on most of the time. I do have a switch, that I can turn the fans on. I do this only when I'm in traffic on hot days. Or when I'm driving slow off-road. I've heard of people wanting to shut off the fan when doing a water crossing. I have never needed to do this. Just to let you know. I am not using a fan on the motor. I only have the two electric fans for cooling.
     
  19. Nov 16, 2012
    johneyboy03

    johneyboy03 The green beast

    Quebec, Canada
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    The reason why some close the fan is in case of deep water, if fan got in contact with the water it will spill it all over the engine and you will give a hard time to them because they cannot turn freely while in water.

    Also if you put the fan between the rad and engine you won't be able to keep the oem static fan because there is not enought room for both of them.
     
  20. Nov 16, 2012
    scott milliner

    scott milliner Master Fabricator

    Seattle Wa.
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    I agree. But I don't see why one would want to go in water that deep. I wouldn't.
     

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