Pro Cal display

[WOADKIL]

I recall my 1995 Eddie Bauer Explorer 4x4 had an oil gauge that was really an idiot light display that moved the gauge needle up or zero. Nice was it had a "low oil" indicator that gave a decent heads up warning for adding oil when needed.

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[BassRanger]

Why would you say that, after all the documentation that I provided? It is not a switch, but a pressure sensor. The PCM knows the exact engine oil pressure and Forscan can display it in actual psi.

Because, it's a switch. What do you think the chances of you oil pressure being 30.0 psi on the dot with the engine running?

 

[Big Blue]

Why would you say that, after all the documentation that I provided? It is not a switch, but a pressure sensor. An oil pressure switch can only indicate 2 states, enough pressure or not enough pressure. An oil pressure sensor indicates a whole range of pressures correlating to actual engine oil pressure.
The PCM knows the exact engine oil pressure and Forscan can display it in actual psi.

It's all a matter of semantics. The term sensor can be used for a switch. The switch is sensing whether there is enough pressure or not. The sensed line is even labeled " low level engine oil". A sensor is what It's called, a switch is what it is.

 

[RangerBill]

It's all a matter of semantics. The term sensor can be used for a switch. The switch is sensing whether there is enough pressure or not. The sensed line is even labeled " low level engine oil". A sensor is what It's called, a switch is what it is.

The Ford shop manual draws a switch differently than a sensor (shown as a potentiometer). Notice the switch symbol below. It is a different symbol than what is shown in my attachments earlier in this thread.

If someone wants to see actual oil pressure in psi, it is available to a scanner such as Forscan. I am only trying to clear up the misinformation being presented on this and other threads on the statements about it not being available. Actual oil pressure information is available to a proper scan tool.

 

[Big Blue]

The Ford shop manual draws a switch differently than a sensor (shown as a potentiometer). Notice the switch symbol below. It is a different symbol than what is shown in my attachments earlier in this thread.

If someone wants to see actual oil pressure in psi, it is available to a scanner such as Forscan. I am only trying to clear up the misinformation being presented on this and other threads on the statements about it not being available. Actual oil pressure information is available to a proper scan tool.

Alright, I hooked up my laptop and Forscan. Looking at the output from that PID does shows a highly pulsating value that does climb with reving the engine as I would expect thr oil pressure to do.

Now the big questnions. What are the PID loop number and formula, so we can use it. Since none of the most popular scanning programs other than forscan seem to be able to access it. With that info we can enter a user added loop into the program. The formula would also tell use if it is a calculated or real reading.

 

[RangerBill]

Alright, I hooked up my laptop and Forscan. Looking at the output from that PID does shows a highly pulsating value that does climb with reving the engine as I would expect thr oil pressure to do.

Now the big questnions. What are the PID loop number and formula, so we can use it. Since none of the most popular scanning programs other than forscan seem to be able to access it. With that info we can enter a user added loop into the program. The formula would also tell use if it is a calculated or real reading.

The engine oil pressure signal input to the PCM is labeled EOP. I don't know if that is of any use to answer your question. There is apparently a controlled loop in the PCM to regulate oil pressure as there is a solenoid output from the PCM labeled Variable Oil Pump, which appears to indicate that the PCM controls engine oil pressure. This is speculation on my part. The actual solenoid is located very near the oil pressure sensor and the oil filter.

 

[Big Blue]

The engine oil pressure signal input to the PCM is labeled EOP. I don't know if that is of any use to answer your question. There is apparently a controlled loop in the PCM to regulate oil pressure as there is a solenoid output from the PCM labeled Variable Oil Pump, which appears to indicate that the PCM controls engine oil pressure. This is speculation on my part. The actual solenoid is located very near the oil pressure sensor and the oil filter.

ODB2 PID loops will have a 6 digit loop number starting with 22. Like 22#### then there will be a formula that can display the actual read value or perform math on it to scale the output to something meaningfull like degrees or psi. The EOP label is just a user defined label to help us humans understand what we are looking at.

 

[RangerBill]

Some additional info that I found on the subject.
Here is an excerpt from the shop manual:

"Engine Oil Pressure Sensor
The engine oil pressure sensor is hardwired to the PCM through voltage reference (VREF), signal and return circuits. The PCM provides the sensor voltage supply on the VREF circuit and monitors the change in voltage through the signal and return circuits as the engine oil pressure changes."

This indicates the way the PCM measures the oil pressure.

 

[BassRanger]

Yeah, I logged it to it does appear to be a live sensor. My apologies Bob, I was wrong on this one.

 

[rbern]

Voltage vs signal the age old dilemma kinda like what came 1st ? Chicken or the egg? Well I would guess voltage not signal lol all in fun. Now that you have it all hashed out let's return to the question at large! .............no display put in the glove box? Or gauge page and ugly u.i.?

 

[Big Blue]

Yeah, I logged it to it does appear to be a live sensor. My apologies Bob, I was wrong on this one.

Yeah sorry Bob. Now we just need to figure out how to program it into Torque Pro or any of the other dash apps.

 

[RangerBill]

Yeah sorry Bob. Now we just need to figure out how to program it into Torque Pro or any of the other dash apps.

No problem guys. I wish I had more info on how to display the pressure, but I have no knowledge on that. Does Forscan work on a smart phone with a Bluetooth or Wi-Fi adaptor?

 

[Big Blue]

No problem guys. I wish I had more info on how to display the pressure, but I have no knowledge on that. Does Forscan work on a smart phone with a Bluetooth or Wi-Fi adaptor?

There are lite versions that will run on Android or IOS that will run on a smart phone. You can't make changes but should be able to observe PIDs. Haven't tried that.

 

[RAYJAY]

No problem guys. I wish I had more info on how to display the pressure, but I have no knowledge on that. Does Forscan work on a smart phone with a Bluetooth or Wi-Fi adaptor?

lookat torque pro app . good read here for the SHO's but a lot will carry over

https://www.ecoboostperformanceforum.com/index.php/topic,3141.0.html

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