JK Auto Overheating

Phoenix Rising · Post by **Phoenix Rising** » Tue May 26, 2015 3:10 pm

Bomolin wrote:For the time being WM said that was not a engine light, it is a throttle light!

Will keep you posted

Which light are you talking about Bomolin, I am only aware of the "Check Engine" light. Perhaps the Dolphin is special?!?!

scotchyl · Post by **scotchyl** » Tue May 26, 2015 5:31 pm

coming from the JKR2014 auto, i run this in high all the time except when its stuck etc (yes it does happen, but only to try the "easy button").

In the rubicon, you can scroll through the multi function steering wheel and it comes to vehicle info. three gauges it displays are collant temp, oil press and trans temp. now when i drive and push it the collant will rise from normal of 97c to 108c, oil stays at 3 and the trans temp goes from 77c to 82c. these i understand from WM are all okay. above 115/120 for coolant or 90 for trans is stepping into a problem area.

I have not had the warning light on but i know that the car gets very hot after continued agreesive driving/sidecresting and i also had a misfire but that was due to excess sand in the filter box.

Hope it gets sorted but maybe try running the JKU in high and hope this eases the pressure on the engine.

Code Red · Post by **Code Red** » Sun May 31, 2015 12:48 pm

Susanne had the throttle light in her 2013. It would also go into "safe mode" and limit rpms to about 3,000. WM never was able to fix it, and ended up replacing the motor under warranty. No problems do far with the new motor.

Bomolin · Post by **Bomolin** » Mon Jun 01, 2015 10:14 am

Well WM did a reprograming of the throttle/CPU and said that if the issue persist I need to bring it back for further diagnosis.

So far pushed quite a lot on last week expert trip, Hi and Low and no issue.

Will keep you posted

Bomolin · Post by **Bomolin** » Mon Jun 01, 2015 10:15 am

Phoenix Rising wrote:
Bomolin wrote:For the time being WM said that was not a engine light, it is a throttle light!

Will keep you posted
Which light are you talking about Bomolin, I am only aware of the "Check Engine" light. Perhaps the Dolphin is special?!?!

Thats the light for the waterproving mod!!

BBQBear · Post by **BBQBear** » Mon Jun 01, 2015 1:25 pm

Hi all! BBQ Bear here. Before you tell me to take my V8 tail gate out of here, I would like to point out a few issues I have had with my truck transmission overheating. Also, my wife has a 2015 Jeep and I bought her a Bully Dog and will also advise on that.

With my F150, I run in low 4x4 all day. As the heat increased, I started getting up to 110 - 115 degrees on the transmission regularly on drives. Way to hot! We have two solutions, one is with a service to keep the warranty through Ford which doesn't concern your Jeeps. The second, which is my option that I chose, was adding a 16 pass fan assisted transmission cooler and integrating it with the current transmission cooler. Since adding it, I have not ever gone above 97 degrees. I drive for about 12 hours last Friday in a 6000 pound truck on low with no problems. If it works for me it will work for you. With the jeep you could probably use a 10-12 pass. Even adding a fan would probably work much better. I spent 1200 for my unit. The fewer the passes the cheaper it gets.

Second, in regards to Bully Dog and the Jeep: I have purchased a BD tuner for my wife's jeep which is a 2015. It will not work yet, but after speaking with BD it will "soon". They need to adjust their programming to work with the 2015.

As a side note about the BD. the unit does not give you control of fan speed. The programming with the Fords do not increase the fan speed, but decrease it. I am suspecting that it is because the GCC specs have higher fan speeds then the U.S. But at least with the BD tuner, my guess is that your heating issue will either not change or get worse.

And finally, before parting, I leave you with this:

http://www.youtube.com/watch?v=lAWUPYVmHxc

Sent from my iPhone using Tapatalk

Kalahari · Post by **Kalahari** » Mon Jun 01, 2015 8:12 pm

Hi Bomolin, my JK Rubicon never a problem with overheating and drove through most of last summer. Temps often over 50 degrees. Mine is auto box and kept in high range 99% of time.

I hope WM fix your baby

Sent from my iPad using Tapatalk

BAHA · Post by **BAHA** » Mon Jun 01, 2015 11:56 pm

Not expert on jeep systems but for GM ( as explained by an expert) a huge amount of heat is brought to the engine and is coming from transmission oil getting cooled in the engine compartment and the solution is adding isolated trans cooler.

Sent from my iPhone using Tapatalk