Cooling questions - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 5 Old 08-14-2018, 07:01 PM Thread Starter
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Cooling questions

2013 rubicon jku

Can I install a lower temp thermostat? If so how low can it be?

Who runs aftermarket cooling fans, cfm, any successes or barely noticeable?

I have a flash paq anyone know if I can turn on fan ar lower temps? I have read I can and cannot?

I'm trying to get my temps down, I have new radiator, water pump, impeller, I bought a poision spider hood vent just need a few hours free to install.
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post #2 of 5 Old 08-14-2018, 08:14 PM
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The thermostat that you have now is what your engine requires. The factory fan is all you need. The hood vent will do wonders for under the hood temps.

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post #3 of 5 Old 08-15-2018, 06:42 PM Thread Starter
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I have seen several post about thermostats, wondering if anyone has tried different fan set ups. I am having issues with heat so im looking for ideas on correcting it. Not be assured I have no problem. Thanks
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post #4 of 5 Old 08-16-2018, 05:39 AM
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re: Cooling questions

First few things I added to my 2011 Unlimited were 14" Hood Louvers ( Synergy Mfg makes them no longer but they are identicle to the 14" louvered hood vents which GenRight Offroad offers) , I went with the stock step-down connector for the fan but got a UPI Aluminum shroud and a SPAL 18" 2740 CFM waterproof fan in it and yes, I use the Flashpaq from Superchips to fine tune the cooling temp cut-ons for the fan ; 186-196 & 206 F are the temp settings I use.



The other big cooling factor is if you're running an auto tranny; heat is the slayer of the automatic slushbox transmission. Because of this , adding an auxiliary transmission cooler - to accompany the one already in the Jeep from the factory - is important for transmission longevity. I added a plate style B&M cooler which far exceeds the GVW capacity of my Jeep. The transmission temp stays around 165-185 with 187 being the hottest it ever has gotten.



This data is all on this forum.





So, while you certainly can run a lower temp thermostat to "trick" the cooling fan to be triggered at a lower temp, that is no longer the way we do things ,as it was with the old inline 6 and other engines. Running the proper thermostat is going to be optimal as far as the Jeep computer expectations are concerned & cooling in manner[s] as mentioned above will be to your advantage.



I hope that helps you.










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post #5 of 5 Old 08-16-2018, 07:56 AM
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The trail dash and others will allow you to adjust the fan speed, I set mine to go into hi when it hit 200*, never have had any temp issues runing trails in 100*+ temps with the AC on. Get a plate style trans cooler, I used one from a F350 it worked great and never gets above 220* crawling.

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