Oil Pump & Pressure Question

[JLUR Farout]

Hello,

Not a complaint, but a knowledge question. If I have my cruise on, say at 65-66 MPH, if I am going slightly down hill the dash shows the oil pressure drop to 20-24 PSI and when I start to go up a grade it will go to 40-51 PSI. If the RPM and transmission gear are not changing, why does the oil pressure change? I thought the 2.0L had a gear driven oil pump so therefore the speed of the pump would remain constant. Am I missing something?

Sort of related, why does Jeep think the altitude is only needed on the gauge screen and not on the GPS screen? My 2023 (the BETTER Garmin setup) was like that and this Tom Tom (shitty setup) is like that as well.

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[jadmt]

you sure you are not shifting down and rpms going up a bit? seems like going down a hill with cruise at 65mph you're going to be in 8th and going up in cruise at 65 you are going to downshift.

 

[oldcjguy]

The engine has a 2 stage oil pump system that's controlled by the PCM and works off of sensed engine load.

 

[JLUR Farout]

you sure you are not shifting down and rpms going up a bit? seems like going down a hill with cruise at 65mph you're going to be in 8th and going up in cruise at 65 you are going to downshift.

Yes, I am quite sure.

 

[JLUR Farout]

The engine has a 2 stage oil pump system that's controlled by the PCM and works off of sensed engine load.

That is neat! Now I have to see if I can find out where that is located and how it works.

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