Oil Temperature. What is too hot?

[Cummins12V98]

You been had again, it seemed clear to me as well as others.

If you say so. This is the internet, we are not talking face to face.

 

[Cummins2014]

If you say so. This is the internet, we are not talking face to face.

It just seemed logical to me and others.

 

[AH64ID]

Go to your dealer and purchase an oil temp sender. I’ll give you double your money for it.

So mixed reports.

Is this oil pressure or temperature?

 

[Newsa]

So mixed reports.

Is this oil pressure or temperature?


View attachment 111684

It looks like the pressure sensor. But it only trips when the pressure drops below 8 psi.

Near the output of the oil pump and before the oil filter.

That is a common location for all pressure sensors (many gassers and diesels) attached to idiot lights for low oil pressure on the dash.

It is where I tapped the oil for an amsoil bypass filter with a T unit that accepted both the amsoil fitting and the pressure sensor on a 1998 isuzu amigo. A temp senaor wouldn't likely be that low and close to the oil pump and oil pan.

 

[AH64ID]

The oil psi sensor has been on the drivers side of these motors, but now I can’t find it.

Also that’s a 1 wire sensor, so it’s a switch not a sensor.

Stupid Ram engineers feeding us BS data.

 

[Newsa]

The oil psi sensor has been on the drivers side of these motors, but now I can’t find it.

Also that’s a 1 wire sensor, so it’s a switch not a sensor.

Stupid Ram engineers feeding us BS data.

Yup. It's a switch.....

 

[Ozymandias]

Whose Cummins died at to high oil temperature OR to low oil pressure?

Fuel consumption is counted by the single injection event, the ECM knows exactly how much fuel is injected.
That sum is displayed on the EVIC.

 

[jhenderson]

Whose Cummins died at to high oil temperature OR to low oil pressure?

Fuel consumption is counted by the single injection event, the ECM knows exactly how much fuel is injected.
That sum is displayed on the EVIC.

If it knows exactly how much fuel is used why is my evic so far off?

 

[Ozymandias]

Do you run stock tires and OEM axle ratio?

 

[Jim W]

Will if you look at the mileage to empty on the EVIC that is pretty darn close, at least on my tuck. Now when I look at the MPG reading, will that is another thing that could be 1 to 2 miles a gallon or more off. I have found with my MPG readings not to reset the readings just let it calculate what the ECM thinks it should be. After the third or fourth tank full the MPG readings are with in a mile or two of my hand calculations.

 

[jhenderson]

Do you run stock tires and OEM axle ratio?

Yes.

 

[Ozymandias]

Yes.

How far off is your speedo compared to a GPS Device?
Should be no more then 1mi. with brand new tires. Grows to 2-3mi. with worn out tires.

Fun Fact; US Speedos are way more accurate then EU Speedos, ours go wrong 5mi. at 65mph. - brand new from factory.

 

[jhenderson]

Fun fact; brand new tires, stock size. speedo within 1 mph of unmanned radar signs up to 65mph. Evic off anywhere from 1-4 mpg. Always optimistic. Your faith in electronic wizardry is misplaced.

 

[Newsa]

It looks like the pressure sensor. But it only trips when the pressure drops below 8 psi.

Near the output of the oil pump and before the oil filter.

That is a common location for all pressure sensors (many gassers and diesels) attached to idiot lights for low oil pressure on the dash.

It is where I tapped the oil for an amsoil bypass filter with a T unit that accepted both the amsoil fitting and the pressure sensor on a 1998 isuzu amigo. A temp senaor wouldn't likely be that low and close to the oil pump and oil pan.

Except the oil pressure switch on the gasser i had was father toward the front of the engine. I guess the gasser had a timing belt driven oil pump where the ISB 6.7 has a gear driven pump so it is not so far forward.

 

[Newsa]

Fun fact; brand new tires, stock size. speedo within 1 mph of unmanned radar signs up to 65mph. Evic off anywhere from 1-4 mpg. Always optimistic. Your faith in electronic wizardry is misplaced.

No fuel flow rate meter means there will be an error in how much fuel it thinks it's injecting under high pressure? Won't lead to massive fuel dilution in crankcase but i have experienced some fuel dilution according to UOA's.

Sounds like they are kicking up the pressure in the fuel rail in the 2019-2020 models. Should be interesting if their new pumps/retooling of fuel system can keep that up for long. Or if it has a high failure rate/ short life?

 

[Jim W]

I agree with OZYMANDIAS on the EU speedo being off. My wife's VW is always misreporting the speed of the car by 5 miles an hour or more. The car speedo is reporting 65MPH when she is actually doing 60MPH. I have verified this with my RV GPS unit that provides MPH when used and I have also verified this by radar speed limit signs in our town.

Jhenderson
Now are you resetting the MPG readings in the EVIC every time you fill-up? If so, this will lead to a lot of erroneously readings of the trucks MPG readings. I have found on my truck not to reset this. As over time this will lead to closer readings of the MPG's that the truck is reporting but will still be off by 1 to 2 MPG.

 

[jhenderson]

I haven’t reset the average mpg since day one. It reads about 16.5 right now. That’s high. The trip I reset every tank as part of my fuel records. The trip mpg is off continuously by anywhere from 1-4 mpg, and its always optimistic. But never by the same amount. My point is, if it knows exactly how much fuel has been injected and exactly how many miles you’ve driven it shouldn’t be off at all,never mind by 25%. Electronic monitors are far from infallible.

 

[Learjet]

I'm never more than 1 mpg off...most of the time .5

 

[sag2]

Yes they are off, and I don't blame FCA for being off on the optimistic side. But when you think about that the ECM has to keep track of the theoretical flow of fuel for every single injection event on every cylinder all day long and add it up, I am still marveled that it is as accurate as it is.

 

[jhenderson]

It doesn’t bother me at all. I am neither surprised or disappointed. I simply questioned the statement that the ecm knows exactly how much fuel has been injected. People put far more faith in some things than is deserved.