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Transmission still overheats after trans cooler installation

 
Old 02-10-2019, 04:29 PM
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Default Transmission still overheats after trans cooler installation

A'ight. I've got a '08 JK. Automatic. I recently had a trans cooler added and today was the first time tooling around offroad since the cooler was added. And....HOTOIL message came up again. The hills weren't so bad that I needed to shift into 4LO or even 4HI. We were in 2WD with the transmission in Drive and O/D on. Granted, I may be stupid here, and if so, tell me so. I've read conflicting posts about O/D on vs. O/D off, and Drive vs. 2nd gear vs. 1st gear. I bow to experience in this case. And I had the transmission oil and filter changed around the same time of the cooler install. Do I now have to changes the oil even tho it hasn't changed color. Thanks. I'll be over here coloring whilst waiting on your replies. Again, thanks.
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Old 02-10-2019, 05:19 PM
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Was your vehicle part of the software flash that was conducted years ago in regards to the hot oil light? I thought have any other details because it didn't pertain to me at the time.
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Old 02-11-2019, 08:56 AM
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You can use a Traildash to turn the fan on quicker and a higher speed. Could be other similar units that can do it also.
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Old 02-11-2019, 09:38 AM
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are you running 37's with stock gears? a little info on your jeep would be helpful
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Old 02-12-2019, 06:43 AM
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At the time 6500lbs empy, 5.38's, 3.8, 40" Trail graplers.
Did the Rubicon loaded up in 100* heat and trans stayed 220* or less trans and oil temps.
Normally would stay 200* or less.

On my '07 running 37's MTRs, 5.38's 6000lbs empty same results.

I run 5-40 Schaffers full SYN.
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Old 02-12-2019, 12:57 PM
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that was for the OP ^^^^
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