PID experimenting

[RcFlyer330]

That's good to know, because in the world of controls programming, where I spend part of my professional career, PID stands for Proportional, Integral & Derivative feedback loop control.

yeah thats what i know pid from. one of the classes i had to take for my degree we had to learn a little about PID loops for tuning an drone aircraft flight controller.

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[powerboatr]

Thanks for confirming that it works.

You can add a conversion to psi if you want.
Torque Pro does this for me when setting up the custom PID and telling it units are kPa.

This should give you psi from kPa.
((A*256)+B)x0.1450377377

I still need to find a Boost PID that works on these new trucks.
No luck with that yet.
Torque Pro and the PID that worked on my old 2011 no longer works on my 2021.
Tried some others I found online that didn't work either.

the math force is strong with this jedi ?

 

[fordtruckman2003]

the math force is strong with this jedi ?

Internet search for kPa to psi. ?

I'm just impressed Ford started using real oil pressure sensor again after removing them for few generations.

 

[Grafx36510]

Thanks @fordtruckman2003 and @Snakebitten. I guess this shows that the pressure gauge in the IPC isn’t totally a dumb display. I tested it a little but and other than the refresh rates not matching completely, they were pretty close.

 

[Snakebitten]

It only shows that the "low load" oil pressure is fairly represented by the graphic image on the IPC.
Add even the smallest load (torque request) and you will witness the variable oil pressure pump switch to high pressure and you will see oil pressure in the 65-80psi range. Yet the graphical image will not have changed in the slightest.

In other words, the graphic image is the same for 35psi and 75 psi. In fact, as long is ICE is running, the graphical image will never differ.

 

[fordtruckman2003]

Oh, I guess OAR can be more than -1.

I have never seen the oil pressure gauge move at all and opted to replace it with the boost gauge for that reason.
For many years Ford was only using a switch and not a variable sensor so it would confuse people now to have a gauge that moves with a true reading.

 

[Grafx36510]

Oh, I guess OAR can be more than -1.

I have never seen the oil pressure gauge move at all and opted to replace it with the boost gauge for that reason.
For many years Ford was only using a switch and not a variable sensor so it would confuse people now to have a gauge that moves with a true reading.

Unlike @Snakebitten I just run 93 without mixing in e85 so it usually show -.7 to -1.0. As far as the graphical representation, I figured that in as to why it’s not completely dumb. I’ll do some more tests, but the bluetooth refresh rate will affect it. I’ll have to have my son record over my shoulder.

 

[Snakebitten]

I think -1.0 is where OAR maxes out with some versions of the PID.
I think I have seen where SCT tuner's PID maxed out at -.96

Or something like that.

And yes, the oil pressure gauge on Ford's have been nothing more than a confirmation of 7psi, since the sensor is just a yes/no open/close at 7psi.

Honestly I don't know where the PID value comes from on the Gen2/Gen3 3.5 Ecoboost. Is there a second sensor? Or is it a calculated value, similar to head temperature pid?

The variable oil pressure pump IS controlled by a 12V solenoid down near the oil pump. You can see the wiring harness and plug. According to documentation, if it fails electronically, it defaults to the high pressure setting.

 

[fordtruckman2003]

Well, I'm also using a Canadian truck so Boost is kPa and probably the oil gauge too. I guess I can turn it back on to see if I can make it move, but I know for sure the oil pressure PID will go up.

 

[Snakebitten]

Unlike @Snakebitten I just run 93 without mixing in e85 so it usually show -.7 to -1.0. As far as the graphical representation, I figured that in as to why it’s not completely dumb. I’ll do some more tests, but the bluetooth refresh rate will affect it. I’ll have to have my son record over my shoulder.

Yea, believe me, the refresh rate on the wired OBD Ngauge is so fast that the oil pressure is a dancing value. Literally a few different values per second, and floating in a range of about 6-10psi. Super fast.
I kinda like it with the smartphone app because it appears "weighted" and easier to understand at-a-glance.

 

[Grafx36510]

Yea, believe me, the refresh rate on the wired OBD Ngauge is so fast that the oil pressure is a dancing value. Literally a few different values per second, and floating in a range of about 6-10psi. Super fast.
I kinda like it with the smartphone app because it appears "weighted" and easier to understand at-a-glance.

That makes sense!

 

[fordtruckman2003]

The OBD adapter is capable of updating several times per second. App might not be requesting it as often.

This is picture from Ford Parts website of sensor used on 2.7 since 2020.
Interesting that it shows first usage on Ranger for 2024.
Speculation but I assume a connector that wide would have more than one wire to get a true variable reading.

ML3Z9D290A

 

[Snakebitten]

That looks like the same connector shape/scale on F150's for years. Multiple motors. I just installed one on a 2014 Coyote.
2 wire harness.
And I'm pretty sure it's just an open/close circuit.
I have no idea where the PID value is originating.

 

[fordtruckman2003]

Part number claims to be used only on 21+ F-150 according to https://parts.ford.com/

If I knew where to find it I would look for it.

Hate to think it is just a guess calculation and not an actual value but it is possible.

 

[Snakebitten]

I wasn't saying it's the same part number, but rather the shape and scale matches the "oil pressure sensor" for a lot of Ford motors.

But you could be right and it's a true pressure sensor.

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