Transmission/Coolant Temps

[Radiotrotter]

Hey all, I have a 2019 ram 1500 4x4 Limited 5.7L with a Tow package and 4 corner air suspension. (no e-torque) I am thinking of next year getting a camper, so I started watching my temps in my transmission and Coolant. My question for you all what are normal temps for the trans and coolant, without load. I mean just driving around normal. I went to pick my girls up from school and it was 27 degrees outside and the coolant mainly stayed around 210, high as 220. The trans temp was between 195 and 202. This kind of concerns me, when I start pulling a trailer in the warmer season I don't want to have a transmission failure. I read somewhere online that anything over 200 degrees in a transmission, shortens the life of the transmission. Do I need to tell the dealership, or am I just worrying too much? So any help you can give me please let me know. I have 28K on it and I also have the 100,000 miles bumper o bumper extended warranty. Max care Plan.

Thanks

 

[SD Rebel]

There are several threads that cover this, but essentially your temps are normal for no load. Old vehicles with 190 F systems was the norm, but modern engines are designed to run hotter for best efficiency, 200 - 220 is normal operating for coolant, but it can go a lot higher under extreme conditions before you get a warning, I think it's 240F-245F for coolant before the warning kicks in. The engine oil will get even higher than that. 230F for engine oil is within normal highs unloaded.

The normal operating temp of most trannys is 195-200F, with 200F considered ideal. The tranny temp, both on my current RAM and previous F150, 195-200F was normal unloaded operating temp. When things start to get too warm is 220F for most trannys, though 230-240 is when you will likely get a warning. Tranny coolant starts to break-down at 240F.

You will notice your trannys temps don't vary as much as the coolant or engine oil temps, they stay a lot more stable.

There is a nice setting on you dash where you see all 4 digital readings in the middle (coolant, oil temp, tranny & oil pressure).

 

[Radiotrotter]

There are several threads that cover this, but essentially your temps are normal for no load. Old vehicles with 190 F systems was the norm, but modern engines are designed to run hotter for best efficiency, 200 - 220 is normal operating for coolant, but it can go a lot higher under extreme conditions before you get a warning, I think it's 240F-245F for coolant before the warning kicks in. The engine oil will get even higher than that. 230F for engine oil is within normal highs unloaded.

The normal operating temp of most trannys is 195-200F, with 200F considered ideal. The tranny temp, both on my current RAM and previous F150, 195-200F was normal unloaded operating temp. When things start to get too warm is 220F for most trannys, though 230-240 is when you will likely get a warning. Tranny coolant starts to break-down at 240F.

You will notice your trannys temps don't vary as much as the coolant or engine oil temps, they stay a lot more stable.

There is a nice setting on you dash where you see all 4 digital readings in the middle (coolant, oil temp, tranny & oil pressure).

Thank you so much

 

[SD Rebel]

Thank you so much

Absolutely, by the way, watch this video, TFL truck test a Rebel towing in extreme conditions, you can see how high the temps go on there...

 

[Mofawa]

Resurrecting an old thread because I can’t seem to find any consistent info. 2020 Ram , is it normal for the trans temp to be 130 after 10 miles of driving when the temps outside are 15 degrees f? After 10 mins it’s creeped up to 165. Feels fine but curious. I have 94k miles and (knock on wood) zero issues and hoping this isn’t a sign of one. I’m hoping to do a transmission fluid change this spring when it warms up.

 

[SD Rebel]

Resurrecting an old thread because I can’t seem to find any consistent info. 2020 Ram , is it normal for the trans temp to be 130 after 10 miles of driving when the temps outside are 15 degrees f? After 10 mins it’s creeped up to 165. Feels fine but curious. I have 94k miles and (knock on wood) zero issues and hoping this isn’t a sign of one. I’m hoping to do a transmission fluid change this spring when it warms up.

I live in 70s year round and it takes a long time to warm up, probably low 100s for the first 10 miles. It tops out at about 192F when towing a 7,000 boat/trailer, but hangs around 183F-185F most of the time after about 25 miles or so.

I believe 183F is considered ideal operational temp but not sure. But for trannys, the cooler the better is what I was always told.

 

[HSKR R/T]

Resurrecting an old thread because I can’t seem to find any consistent info. 2020 Ram , is it normal for the trans temp to be 130 after 10 miles of driving when the temps outside are 15 degrees f? After 10 mins it’s creeped up to 165. Feels fine but curious. I have 94k miles and (knock on wood) zero issues and hoping this isn’t a sign of one. I’m hoping to do a transmission fluid change this spring when it warms up.

With those outside temps, and assuming you park outside, it's going to take a while for the transmission to warm up. My drive to and from work is only about 10-15 minutes. Transmission doesn't get about 160 on the drive in winter. Longer trips and it actually runs warmer, in the 190-195 range on the freeway, since the outside temps have dropped below freezing. In the summer, even in 95+ temps, the trans ran in the 180s unless I was pushing it harder or moving slow. This is with the PPE pan and extra fluid capacity.