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  #1  
Old 12-06-2013, 01:09 PM
bigralphy bigralphy is offline
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Default Cold Weather Shift Pattern

Hi all. I have noticed something on my 2013 ram 6 speed that may interest you. When the temperature dips to -27 C, the transmission shift pattern changes dramatically. The shift from 2nd to 4th will not happen until 60kmph. When the vehicle slows to 50 it will then shift back to 2nd and will stick there until you reach 60 again no matter if you are on the throttle or not. I decided to stick my arm out the window and cover the sensor on the mirror and when the temp rose to -26C, the shift pattern returned to normal.

I do not know if this is normal and have an appointment in the morning but I was wondering if anyone else has had this issue?
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Old 12-06-2013, 01:44 PM
ptesmoke ptesmoke is offline
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ive noticed this as well. (-44C here today) and ive also noticed it on my previous rams as well. to me it seems like if the tranny fluid is below such a temperature it wont shift into overdrive. its likely to warm up the tranny faster maybe, or it could be the fluid is just thick enough to prevent it from clutching properly. either way i wouldnt be too concerned it has never really proven to be an issue in my trucks. you should see how my 2003 santa fe performs in -44C lol!!
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Old 12-06-2013, 01:48 PM
bigralphy bigralphy is offline
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I am not too concerned but it just seems weid that my tranny temp is 60C. Why would dodge map the shift pattern to the outside temp rather than the tranny temp. Fuel mileage sucks big time in this mode.
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Old 12-06-2013, 06:12 PM
Red-Stripe Red-Stripe is offline
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That makes no sense, to use temp at the mirror to decide shifting routines.
Let us know what the garage finds
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Old 12-06-2013, 06:19 PM
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Yeup that's normal, 2 Rams and 1 Dakota all do the same thing at this temp. First time it happened with my old Dakota, called the dealer and they explained that it will not shift into overdrive if the tranny cannot get up to a certain temp. I did a 700km round trip yesterday and it took a good couple of hours before the tranny started shifting correctly again.
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Old 12-06-2013, 06:41 PM
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Quote:
Originally Posted by bigralphy View Post
Hi all. I have noticed something on my 2013 ram 6 speed that may interest you. When the temperature dips to -27 C, the transmission shift pattern changes dramatically. The shift from 2nd to 4th will not happen until 60kmph. When the vehicle slows to 50 it will then shift back to 2nd and will stick there until you reach 60 again no matter if you are on the throttle or not. I decided to stick my arm out the window and cover the sensor on the mirror and when the temp rose to -26C, the shift pattern returned to normal.

I do not know if this is normal and have an appointment in the morning but I was wondering if anyone else has had this issue?
You wouldn't shift right, or the same, at -27C either.....
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Old 12-06-2013, 06:46 PM
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Originally Posted by Stump3r View Post
Yeup that's normal, 2 Rams and 1 Dakota all do the same thing at this temp. First time it happened with my old Dakota, called the dealer and they explained that it will not shift into overdrive if the tranny cannot get up to a certain temp. I did a 700km round trip yesterday and it took a good couple of hours before the tranny started shifting correctly again.

wow, I am guessing I should be happy that I am not in your area right now
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Old 12-06-2013, 07:16 PM
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on the way home from work it was -26C and the shifting was fine, then it down shifted to 2nd for no reason. checked the temp and it said -26 then changed to -27 again. this is way weird. my 2011 didnt do this at -35C so I am unsure why this 13 is any different.
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Old 12-06-2013, 09:27 PM
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wow, I am guessing I should be happy that I am not in your area right now

You're not kidding.

Alberta had 6 of the cold records in the world today,with Leedale AB being the coldest place on the planet,

Last edited by Hornet; 12-06-2013 at 09:29 PM.
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Old 12-06-2013, 09:37 PM
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The new Rams have switched things around a bit
The transmission fluid works best at 190 F degrees, same as the engine temperature

A segment exclusive on the 2013 Ram 1500 is a new thermal management system, designed to quickly raise the transmission fluid temperatures to cut parasitic losses and wear, improving fuel efficiency by 1.7%. It is enabled by an electronic thermostat which constantly monitors antifreeze temperature; once it’s hot enough, warm engine coolant is circulated through a thermal exchange unit which heats up the transmission fluid. In most vehicles, the transmission heats up independently of the engine. (The system also works for engine oil.)
We get benefit from bringing both of them [oil and transmission fluid] up to operating temperature faster. The primary benefit comes in the transmission. In colder climates, you could drive a vehicle for hours in the winter and the transmission might never reach that 190 (F) for the most efficient operation. So what we do is use some of that hot engine coolant through the heat exchanger to bring it up to 190 as quickly as possible, and that gives us efficient operation very quickly.


Original is at 2013-2014 Dodge Ram 1500 engine, transmission, and axles (powertrain) http://www.allpar.com/model/ram/dodg...#ixzz2mkjUkCfh
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Last edited by GTyankee; 12-06-2013 at 09:40 PM.
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