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Old 02-23-2012, 12:33 PM   #1
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hot oil again :-(

Hi everyone, this past Sunday I went out to offroad and got myself stuck a few times on very slippery and muddy hills. The tranny got hot and I got the "hot oil" warning. I stopped the vehicle and turned on the AC on high to force the fan to turn on. That lowered the temp in less than 60 seconds.

I have a B&M tranny cooler installed, however, it does not has a fan. I want to add a fan now, but one that turns on automatically at X temp. For example at 175 degrees. I then will make an additional connection for a manual power shut off/on switch so that if I have to do water crossing I can cut the electricity and stop it from running.

My question is: Can you guys recommend me a good fan with temp sensor?

Don't know if it is better to add on the fan or to get another tranny cooler that comes with the fan.

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Old 02-23-2012, 06:16 PM   #2
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The stock fan will do the job just fine. You just greatly increased the cooling capacity of your system with the aux cooler. The stock fan will pull the air you need to have pulled. Just be sure you are turning off the ESP when wheeling to keep the brakes from actuating and putting more work on the trans. You should also consider running in 4Lo instead of 4Hi to also keep from overworking the trans.

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Old 02-23-2012, 06:23 PM   #3
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Like Tjt94 said,try 4lo. Especially, on long uphill runs or in the sand. The Jk auto has been known to overheat. Chryslers fix was to give us a dummy light. I hope they fixed it with the new auto transmission in the 2012.
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