7.3 recall
Laughing Gas
Joined: Nov 2010
Posts: 792
Likes: 254
First off, thanks to those in this thread that have contributed valuable information.
I have been watching the 7.3 oil pressure at idle stuff carefully as I have a 2020 7.3 that I idle a lot, sometimes over 10hrs a day. Currently at 2400 idle hours.
At first when I saw the info posted with the pressure data from the PID EOP_PRESS on the 23 I thought this is probably because they changed the sensor on the 23s and my 20 just has a dummy switch.
I got Forscan fired up and I don't have a PID for EOP_PRESS like I susspected, HOWEVER I do have one for EOP_V(Voltage) which looks to be the raw volatage from the 5V sensor, OK thats something...
Also have a PID called "EOPDC_CMD" or Engine Oil Pressure Duty Cycle Comanded
So while monitoring this I started the already warm engine(it was sitting about 30min since full operating temp) and recorded those PIDs
It does appear the EOP_V is a actual 5V ref sensor PID which is great.
You can see the EOP drop correlating to the amount of duty cycle commanded from the solenoid.
This confirms what we have been hearing about the oil pressure being lowered at idle electronically.
My next question, does anyone have a part number for the oil pressure solenoid control valve? Because I would like to plug it in and see if we could use it as a "dummy plug" and have the actual valve in default no pressure relief mode.
Also, where is this solenoid located on the motor?
I have been watching the 7.3 oil pressure at idle stuff carefully as I have a 2020 7.3 that I idle a lot, sometimes over 10hrs a day. Currently at 2400 idle hours.
At first when I saw the info posted with the pressure data from the PID EOP_PRESS on the 23 I thought this is probably because they changed the sensor on the 23s and my 20 just has a dummy switch.
I got Forscan fired up and I don't have a PID for EOP_PRESS like I susspected, HOWEVER I do have one for EOP_V(Voltage) which looks to be the raw volatage from the 5V sensor, OK thats something...
Also have a PID called "EOPDC_CMD" or Engine Oil Pressure Duty Cycle Comanded
So while monitoring this I started the already warm engine(it was sitting about 30min since full operating temp) and recorded those PIDs
It does appear the EOP_V is a actual 5V ref sensor PID which is great.
You can see the EOP drop correlating to the amount of duty cycle commanded from the solenoid.
This confirms what we have been hearing about the oil pressure being lowered at idle electronically.
My next question, does anyone have a part number for the oil pressure solenoid control valve? Because I would like to plug it in and see if we could use it as a "dummy plug" and have the actual valve in default no pressure relief mode.
Also, where is this solenoid located on the motor?
p/n JT4Z-6C880-A used on a whole slew of Ford gas engines. Plugging a bogus one in won't keep it from setting a P06DXX code because actual vs commanded pressure will be out of whack.
Laughing Gas
Joined: Jul 2020
Posts: 1,069
Likes: 283
I guess programming is the only way around this...
Rather Be Rid'n!
Joined: Nov 2023
Posts: 448
Likes: 205
From: SE Massachusetts
Post #102 looks to be an adapter you add under the oil filter as a place to get a mechanical reading with a gage.
Laughing Gas
Joined: Jul 2020
Posts: 1,069
Likes: 283
saratoga2011 has since stated it by the starter so we are good now.
Mountain Pass
Joined: Oct 2023
Posts: 164
Likes: 124
From: Florida
When hooked up to Forscan, was there a way to tell when the pressure started to pick up off idle and at what RPM? Just wondering if it would be a good idea to hook up a high idle to the upfitter switch the same as a diesel since all the wiring is there just need a resistor. Would be nice to know if 850 or 950 RPM was enough to raise the pressure to a pressure that would be sufficient to protect the engine. I talked to Ford today and although my 23 falls in the build date range, my VIN does not show up in their system as eligible. Appreciate those of you taking the time to test these things for us.
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Fleet Mechanic
Joined: Dec 2002
Posts: 1,664
Likes: 188
When hooked up to Forscan, was there a way to tell when the pressure started to pick up off idle and at what RPM? Just wondering if it would be a good idea to hook up a high idle to the upfitter switch the same as a diesel since all the wiring is there just need a resistor. Would be nice to know if 850 or 950 RPM was enough to raise the pressure to a pressure that would be sufficient to protect the engine. I talked to Ford today and although my 23 falls in the build date range, my VIN does not show up in their system as eligible. Appreciate those of you taking the time to test these things for us.
Mountain Pass
Joined: Oct 2023
Posts: 164
Likes: 124
From: Florida
Not sure but it would be better to just raise the pressure rather than a high idle due to the fuel burn increasing but may be a good temp fix until its available to all. Only reason I would think our VIN is not loaded yet is due to the time it will take for ford to load them. I can only assume its not a one fits all if the module has to be reprogrammed per vin due to all the options being different one truck to another. But the fix itself is probably the same for each meaning simply raising the pressure at idle. Can’t imagine some need it and others don’t, doesn’t make sense to me.
Mountain Pass
Joined: Oct 2023
Posts: 164
Likes: 124
From: Florida
Anyone had this done yet?? I talked to my dealer and my truck falls in the build date range but my VIN does not show eligible as of yet?? Makes no sense unless Ford is slowly adding VINs to the list.
Lead Driver
Joined: Feb 2005
Posts: 7,923
Likes: 2,642
From: The Great State of Texas
Bingo... Give this man a cigar