Burning smell concern, trans?

[Rwgarrison23]

Just bought my 1st 2500. It's a 2018 2500 6.4l hemi 19k. I have concern with the burning smell going up the hill to my house. The hill is maybe 1 mile. I kept my eye on the trans temp gauge and its reading between 165 to 173. I checked the trans fluid, it doesnt smell burnt or anything. Should I be concerned?

 

[McBroom]

Just bought my 1st 2500. It's a 2018 2500 6.4l hemi 19k. I have concern with the burning smell going up the hill to my house. The hill is maybe 1 mile. I kept my eye on the trans temp gauge and its reading between 165 to 173. I checked the trans fluid, it doesnt smell burnt or anything. Should I be concerned?

Yes I think I would be concerned. Did the dipstick level read low


The Blue Mule

 

[Rwgarrison23]

Yes I think I would be concerned. Did the dipstick level read low


The Blue Mule

Not at all. Reading at hot. Nice and pinkish color.

 

[HammerHead]

Just bought my 1st 2500. It's a 2018 2500 6.4l hemi 19k. I have concern with the burning smell going up the hill to my house. The hill is maybe 1 mile. I kept my eye on the trans temp gauge and its reading between 165 to 173. I checked the trans fluid, it doesnt smell burnt or anything. Should I be concerned?

My transmission runs at 168-170; totally normal.

 

[Rwgarrison23]

My transmission runs at 168-170; totally normal.

Bypass worth the mod?

 

[HammerHead]

Bypass worth the mod?

I haven’t done one, but Everyone loves it. I don’t want to void my warranty. Guys are seeing 40 degrees F drop in temps.

 

[Rwgarrison23]

I haven’t done one, but Everyone loves it. I don’t want to void my warranty. Guys are seeing 40 degrees F drop in temps.

Well, I do notice on my same hill to my house. You can only do maybe 25 to 30 mph. It lugs my.engine down to 1100 rpm or it wont down shift. What is this?

 

[HammerHead]

Well, I do notice on my same hill to my house. You can only do maybe 25 to 30 mph. It lugs my.engine down to 1100 rpm or it wont down shift. What is this?

Hmmmm that sounds odd, try putting it in manual mode. That way you can manually shift it into a lower gear. I use manual mode 24/7 every day.
I would also get it to the dealership and have them look at it.

 

[Rwgarrison23]

I checked my trans fuild this morning and it looks normal and right at cold fill.

 

[HammerHead]

I checked my trans fuild this morning and it looks normal and right at cold fill. View attachment 177029

If you can try Manual mode and let us know how it goes?

 

[SouthTexan]

165 to 175 is not hot for the 66/68RFE. I am not sure about the burning smell. Could be multiple things from oil blow by to spilled oil/fluid from a recent oil change.

As far as it not shifting. The previous oneer might have driven it like a grandpa. These transmissions are adaptive transmissions and they shift according to how they are driven in the past 100 or so miles. The more aggressive you drive, the later the shifts with more firm shifting and so on. If you have a way to make the trans go into relearn mode to learn your driving then it might adapt to your driving sooner. I would take it easy for the first 30 miles after a relearn and try to go through all the gears as much as possible. That should be enough time for the valve body to know how mutch fluid to add to each clutch pack.

 

[Rwgarrison23]

165 to 175 is not hot for the 66/68RFE. I am not sure about the burning smell. Could be multiple things from oil blow by to spilled oil/fluid from a recent oil change.

As far as it not shifting. The previous oneer might have driven it like a grandpa. These transmissions are adaptive transmissions and they shift according to how they are driven in the past 100 or so miles. The more aggressive you drive, the later the shifts with more firm shifting and so on. If you have a way to make the trans go into relearn mode to learn your driving then it might adapt to your driving sooner. I would take it easy for the first 30 miles after a relearn and try to go through all the gears as much as possible. That should be enough time for the valve body to know how mutch fluid to add to each clutch pack.

I've heard about the trans relearn. Is there anyway I can reset it and drive the way I normally do?

 

[HammerHead]

I've heard about the trans relearn. Is there anyway I can reset it and drive the way I normally do?

Re-learns are done at the dealership, I’d take it in and let them look at it. That way it’s documented and they can do the relearn at the same time.

 

[stoney]

165 to 175 is not hot for the 66/68RFE. I am not sure about the burning smell. Could be multiple things from oil blow by to spilled oil/fluid from a recent oil change.

As far as it not shifting. The previous oneer might have driven it like a grandpa. These transmissions are adaptive transmissions and they shift according to how they are driven in the past 100 or so miles. The more aggressive you drive, the later the shifts with more firm shifting and so on. If you have a way to make the trans go into relearn mode to learn your driving then it might adapt to your driving sooner. I would take it easy for the first 30 miles after a relearn and try to go through all the gears as much as possible. That should be enough time for the valve body to know how mutch fluid to add to each clutch pack.

X2....hook up a trailer to the truck and tow it.
My truck always runs and shifts the best after towing.
Otherwise, just beat on it for a bit.....or visit a dealer for flash/updates, then don't drive like a nanny!

 

[mtofell]

I've had the same thing in various vehicles and found it to be the rear end smelling hot after being loaded (going up hill). Next time it smells get down close to the differential and see if it is more noticeable. I don't know that it means there is anything wrong with it. Also, I've never really known why it smells more some days than others but am pretty sure that is what I am smelling.

 

[SouthTexan]

I've heard about the trans relearn. Is there anyway I can reset it and drive the way I normally do?

Certain devices like my Edge Insight or Snap-on diagnostic scanners can force the trans to relearn. If I am not mistaken, AlfaOBD can as well. The transmission also goes into relearn mode every time you flash a new map/tune to the ECM. If you don't have any of these then you will have to get the dealer to do it.

You kind of want to take it easy going through the gears for the first 30 miles after a relearn. When you reset the trans perimeters, it resets the trans fluid values it uses to keep the clutch packs together. Too much fluid and it will bleed out, and too little will not hold the clutch packs together making them slip. The trans is adjusting this value every shift until it dials it is for the first 30 miles. This is not the same as relearning shift points.

 

[Rwgarrison23]

I have a appointment with the dealer on Sept 5th for the transmission relearn.

 

[HammerHead]

I have a appointment with the dealer on Sept 5th for the transmission relearn.

Did you try manual shifting into a lower gear?

 

[Rwgarrison23]

Did you try manual shifting into a lower gear?

I did, it acted same way.

 

[Rwgarrison23]

I wonder if the mds kicking on going up hills causes that?