Join Date: Feb 2019
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2015 6.7L Burning Smell & Trans Question
After traveling mountain back roads today for about an hour or so, my wife and I noted a burning smell when we got out of the truck. The last little bit of the trip was quite a bit of steep grades and low speeds.
I let the truck run for a few minutes to circulate coolant and noted when walking by the exhaust tips that the exhaust was hotter than normal (I didn't have my infrared thermometer). It didn't indicate it was in regen at the time.
The trans and oil temps were normal the whole trip...but I've noted my trans has had a few hard shifts and slight slips every once in a while recently.
All of the fluids were within fill range and smelled ok.
Wondering if this could just be the high load and low speed contributing to high exhaust temps? Anyone else experience this in the mountains or while pulling/towing at low speed?
Also - anyone else have a slight slip and hard downshifts (mainly 5-6 up shift when cold and 6-5 downshift cold or hot) in this model truck?
Thanks for any feedback.