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Old 03-03-2013, 11:42 AM   #21
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Just for comparison, when not towing, and in cooler weather, my Chev 1500 transmission would run at 170 degrees. When towing in the summer with about 85 degree ambient, it would be about 195 degrees. Also keep in mind what the earlier post said about the location of the sensor. I think GM puts them in the pan. Don't know where the Dodge sensor would be located.
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Old 03-03-2013, 12:48 PM   #22
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Any 1500 Ram owner have stats on their transmission temps?
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Old 03-03-2013, 12:49 PM   #23
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Thanks for that info
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Old 03-06-2013, 09:51 PM   #24
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Transmission Temp. & Towing

been watching transmission temps for the last few days and it averages around 123F
I don't know where I got the 195F number from.... I either made a mistake or it did read that but only the one time and that was just one day after I had a transmission flush and fluid changes at the Dodge dealer.... I'll keep an eye on it but I think we're good now.
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Old 03-07-2013, 05:39 AM   #25
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Quote:
Originally Posted by Boubou View Post
been watching transmission temps for the last few days and it averages around 123F
I don't know where I got the 195F number from.... I either made a mistake or it did read that but only the one time and that was just one day after I had a transmission flush and fluid changes at the Dodge dealer.... I'll keep an eye on it but I think we're good now.
That looks more like mine. When not towing and cold outside the needle seems to stay between 110 and 130.
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Old 03-07-2013, 06:54 AM   #26
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When I had my 2002 F150 (5.4L, 4R100 4-speed), I installed a trans temp gauge and put the sensor in the hot line going to the trans cooler. This is the hottest your trans fluid will be as it is just leaving the torque convertor. I saw temps close to 210* at times, pulling long grades etc. I towed with O/D off and tried to make sure that the torque convertor was locked as much as possible. Normal driving, temps were 170*-180*. I also installed a second auxiliary cooler with a fan that I could turn on when necessary. That set-up worked very well.

I have a factory trans temp reading in the new truck (in my sig) and it usually rides between 180*-190* not towing, and 210* towing. Not too much difference there except with Tow/Haul I don't have to worry about taking it out of O/D.
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Old 03-07-2013, 07:13 PM   #27
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I, too, employ the Scan Gauge II to monitor my transmission temps. It is a very helpful gauge that provides an array of data via your OBDII connector. With respect to monitoring the transmission temps, you need to enter codes specific to your TV. See this link for the type of commands and vehicles that the gauge supports. http://www.scangauge.com/support/x-gauge-commands/

Although everyone's transmission temps will differ due to rig set-up, climate, altitude, and the like, I am posting a chart that shows the number of miles your transmission fluid "life" is reduced (due to oxidation) as your fluid temp increases. The data was prepared by the California Dept of Forestry and Fire Protection.

For those of you who insist (or are considering) on towing large TTs with 1/2 TVs, even if your rig is within "spec," it is recommend that you consider these other types of "non-spec" data points, too.

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Old 03-08-2013, 09:05 AM   #28
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I replaced my stock trans cooler with this one. http://www.etrailer.com/dept-pg-Engi...w-Class_V.aspx I monitor my temps on my tuner and when the trans temp gets in the 180* range I turn the fan on that I have wired to a on/off switch under the dash. I like to keep my trans temp under 200* if possible and if I know of a hard pull ahead I will turn the fan on a few miles ahead to try and get a head start on the rising temps. In the hottest part of summer on flat terrain my trans temp stay in the 170-180* range towing with this cooler.
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Old 03-08-2013, 06:29 PM   #29
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great info! I saved it
thanks
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Old 03-08-2013, 06:32 PM   #30
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Thank you all for the replies! very helpful as usual
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Old 03-09-2013, 08:08 AM   #31
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I have a 2011 Ram 1500 QC pulling a 26BH. Usually the transmission temperature runs about 80 degrees above the outdoor temperature. For instance, on my last long drive (from Big Bend NP to Ft. Stockton, TX) the transmission temp was running at 138 degrees most of the time.

When the pulling is more severe, like on the uphill grade of mountain passes, I've seen the temp as high as 210 degrees, which is still not anywhere near overheating. I think 275 degrees is where the overtemp transmission warning comes on.

When towing, the trick is to keep the torque converter locked up as much as possible. That means operating the transmission in a low enough gear to prevent downshifts on most, if not all of the uphill grades you encounter. I always operate the transmission in tow-haul mode when towing, and using the gear-range lever on the shift knob, set the top gear to "4".

When in tow-haul and in 4th, the transmission of power is at a 1-to-1 ratio, basically direct drive. That will save wear on the gears.

Pulling up the mountain passes I will drop the gearing down to 3, or even 2, which increases RPMs and torque and lessens the strain on the engine and transmission.

My truck has about 37K miles on it now, and with about 25K of those being towing-miles, the transmission fluid is still bright red and clean and smells sweet. The owner manual recommends the first transmission fluid change (when towing frequently) at 64,000 miles, and if the fluid looks and smells good that long, that's when I'll change it.
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