What about rapid oil temp fluctuation?
Today mine started rapid drops in oil temp to 170 in a matter of seconds from 199, and then it took a while to get back up to 199, and as soon as I stopped, it dropped back to 170 almost instantly.
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What about rapid oil temp fluctuation?
Today mine started rapid drops in oil temp to 170 in a matter of seconds from 199, and then it took a while to get back up to 199, and as soon as I stopped, it dropped back to 170 almost instantly.
IGOTACUMMINS thanked for this post
Mine started to do this when I changed from stock/deleted to my current setup.Originally Posted by Ray Roberts
It's not a real oil temp sensor, just an algorithm that works off of coolant temp and other inputs.
Before, mine would steadily warm up to 203-204 unloaded and hold that temp until I shut it off.
So, my truck did the same thing today.
When driving on the freeway, exiting the highway, and coming to a stop, the oil temperature drops from 199 to 145.
I drive down the road and slowly come back up, then drop again to 170.
This is baffling me.
Does anyone have any ideas?
Sent from my SM-G781V using Tapatalk
2014 2055
Deleted, tuned(DRD)
Fully Build 68RFE by BD Diesel
SXE 64.5 fixed vane turbo
Inline exhaust break
Stock CP3 and injectors
IGOTACUMMINS thanked for this post
What is your coolant temperature doing during this event?
The oil temperature will fluctuate with the coolant temperature.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
IGOTACUMMINS thanked for this post
Coolant was steady at 190.
Sent from my SM-G781V using Tapatalk
2014 2055
Deleted, tuned(DRD)
Fully Build 68RFE by BD Diesel
SXE 64.5 fixed vane turbo
Inline exhaust break
Stock CP3 and injectors
It makes me question the oil temperature sensor.
It's hard to believe the oil temperature would drop 54*F when coming to a stop.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
I thought the same thing but could not find an oil temperature sensor.
My limited understanding is that there isn't a dedicated oil temperature sensor.
I'm probably wrong, and I would appreciate some knowledge on this one.
Sent from my SM-G781V using Tapatalk
2014 2055
Deleted, tuned(DRD)
Fully Build 68RFE by BD Diesel
SXE 64.5 fixed vane turbo
Inline exhaust break
Stock CP3 and injectors
ALLDATA shows the oil temperature sensor is located on the oil filter housing area, but I haven't verified this.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
I got curious about the location of the oil temperature sensor after you asked the question.
I took my camera scope and looked around the oil filter area but found only the oil pressure switch.
I checked the OEM wiring diagram for my 6.7, but the oil temperature sensor isn't showing.
At this point, I believe ALLDATA has led us astray; maybe the 5.9L had one, but not the 6.7.
Maybe the oil temperature is one of those PCM-calculated values like the actual oil pressure.
If anyone knows more about this, please chime in.
2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.
Mine has done this exact thing.
Sometimes, when I come up my mountain and work the truck a little, I pull into the driveway, and suddenly, there is a huge oil temperature drop like you have.
I have noticed it sometimes does that when the fans are moving air or even just normal.
Mine have done it since I have owned it, and I have never noticed anything major with it doing that.
It would be nice to understand why it does it though because it's hard to believe it can cool instantly.
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