Cerberus Posted November 28, 2023 Report Share Posted November 28, 2023 For those who like to monitor data from their drivetrain, I have a question regarding oil pressure. At idle with the engine fully at temp, I see oil pressure fluctuations from 17-26 psi, for no apparent reason. Now, I know the pump has some variable geometry system which allows for different oil pressure (or flow rate?) basically on demand, but I don't like seeing so much variability in the pressure at idle. It still makes over 80psi when the loud pedal is on the floor, so I think the pump is probably fine, but I'm still curious if this is a common thing or possibly an indication of something wrong. Quote Link to comment Share on other sites More sharing options...
dabangsta Posted November 28, 2023 Report Share Posted November 28, 2023 Is this using OBD-II data, an added electronic sender, or a mechanical gauge? I had a low oil pressure light on in my 2012 Fusion with the 3.5 (which is not a 2.7 GTDI engine I know...) at some specific places (like stopping at a light after doing 45 mph and coming around a corner), so I checked with a mechanical gauge at it was at 18-21 psi depending on the engine temp. I replaced the oil pressure sender and it no longer comes on when idling when hot and specific driving conditions. Quote Link to comment Share on other sites More sharing options...
Cerberus Posted November 28, 2023 Author Report Share Posted November 28, 2023 6 hours ago, dabangsta said: Is this using OBD-II data, an added electronic sender, or a mechanical gauge? I had a low oil pressure light on in my 2012 Fusion with the 3.5 (which is not a 2.7 GTDI engine I know...) at some specific places (like stopping at a light after doing 45 mph and coming around a corner), so I checked with a mechanical gauge at it was at 18-21 psi depending on the engine temp. I replaced the oil pressure sender and it no longer comes on when idling when hot and specific driving conditions. This is using OBDII data by OBDLink Bluetooth dongle. I have this "dashboard" of gauges that I use to monitor various relevant parameters by my phone Quote Link to comment Share on other sites More sharing options...
Cerberus Posted November 29, 2023 Author Report Share Posted November 29, 2023 Granted this happened while coming to a stop or turning/ accelerating from a stop, but that yellow arrow head at around 7psi oil pressure is not something I can easily ignore. I dont think an oil pressure sensor is to blame. Quote Link to comment Share on other sites More sharing options...
dabangsta Posted November 29, 2023 Report Share Posted November 29, 2023 Since everything else shows the minimum at the low end of the scale, that 7 psi wasn't from initial startup? Can it be reset to not show initial value? I wonder how it is calculated. When I was adding PIDs to Torque the oil pressure one was actually percentage. So most people change the formula to use 80 psi as 100% (so they take the percentage of 80 psi and display that as the pressure) which seems to be what is done here. Quote Link to comment Share on other sites More sharing options...
Cerberus Posted November 29, 2023 Author Report Share Posted November 29, 2023 8 hours ago, dabangsta said: Since everything else shows the minimum at the low end of the scale, that 7 psi wasn't from initial startup? Can it be reset to not show initial value? I wonder how it is calculated. When I was adding PIDs to Torque the oil pressure one was actually percentage. So most people change the formula to use 80 psi as 100% (so they take the percentage of 80 psi and display that as the pressure) which seems to be what is done here. Everything else shows zero because I did not reset the min/max on them. I did reset the min/max on the oil press after startup. Cold idle, it's around 27psi and solid. At temperature, it flickers as I described before. This value is not a percentage. Quote Link to comment Share on other sites More sharing options...
Cerberus Posted December 1, 2023 Author Report Share Posted December 1, 2023 just as an illustration, i reset most if not all gauges min/max halfway to work. Oil pressure still dropped to around 10psi, which is not the end of the world, but I don't like it. Quote Link to comment Share on other sites More sharing options...
omar302 Posted December 8, 2023 Report Share Posted December 8, 2023 (edited) I meant to reply earlier, I tried monitoring the oil pressure using ForScan lite (android), these are my observations: Driving, I did see low oil pressures, as low as 2.9 psi at one point, which seems to have been from when braking/stopping hard. At idle, or stopped in drive, the oil pressure fluctuates ~2-4 psi only. Oil pressure is the last graph at the bottom in below screenshots (EOP_PRESS): Fist screenshot is from while driving. Second is while idling stopped in drive. Third is while idling in Park. Edited December 8, 2023 by omar302 2 Quote Link to comment Share on other sites More sharing options...
Cerberus Posted December 8, 2023 Author Report Share Posted December 8, 2023 2.9 pounds of oil pressure, even for a moment, would make me very uncomfortable! I know that might sound like an alarmist point of view, but it's fairly important. There can obviously be a debate as to how low is too low, especially over a duration of time.. but given my experience, I'd much rather have too much oil pressure if there is such a thing, than not enough. Quote Link to comment Share on other sites More sharing options...
Haz Posted December 10, 2023 Report Share Posted December 10, 2023 Edge 2.7 EcoBoost specification from the 2016 Workshop Manual... Oil Pressure NOTE: The following oil pressure readings are acquired using a scan tool and monitoring the EOP_PRESS PID. Item Specification Reading 1: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park 21 psi (144.8 kPa) Reading 2: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park (Oil Pressure Control Solenoid connector disconnected) Reading 1 value plus 8 psi (55.1 kPa) Good luck! 2 Quote Link to comment Share on other sites More sharing options...
Cerberus Posted December 10, 2023 Author Report Share Posted December 10, 2023 2 hours ago, Haz said: Edge 2.7 EcoBoost specification from the 2016 Workshop Manual... Oil Pressure NOTE: The following oil pressure readings are acquired using a scan tool and monitoring the EOP_PRESS PID. Item Specification Reading 1: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park 21 psi (144.8 kPa) Reading 2: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park (Oil Pressure Control Solenoid connector disconnected) Reading 1 value plus 8 psi (55.1 kPa) Good luck! this is interesting information. i have a page extract here that says something different, although it is a from a 2015 fordtechservice.dealerconnection . com 2.7 ecoboost specifications pdf it specifies 30psi minimum oil pressure @ 1500 rpm with engine at normal operating temperature One of the interesting take-aways from your reference Haz, is that the oil pressure control solenoid when disconnected, drives oil pump output up from baseline by 8psi Soo... what if it was just disconnected and left that way? I suspect it might annoy the computer, but would it de-rate the operation? Quote Link to comment Share on other sites More sharing options...
Haz Posted December 10, 2023 Report Share Posted December 10, 2023 (edited) Perhaps your Workshop Manual extract is from prior to October 15, 2019, when that 2015 Specifications page was revised... Oil Pressure NOTE: The following oil pressure readings are acquired using a scan tool and monitoring the EOP_PRESS PID. Item Specification Reading 1: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park 21 psi (144.8 kPa) Reading 2: Minimum average oil pressure @ 2,000 rpm after 15 secs with engine at normal operating temperature and transmission in Park (Oil Pressure Control Solenoid connector disconnected) Reading 1 value plus 8 psi (55.1 kPa) Your supposition on the Oil Pressure Control Solenoid affect is confirmed by Steps 5 & 7 of Electronic Engine Controls diagnostic Pinpoint Test H... Document download link> Oil Pressure Control Solenoid Removal and Installation - 2015 Edge Workshop Manual, Revised 01-09-2015.pdf (consistent with 2016 Edge Workshop Manual) Good luck! Edit: I neglected to include... DTC Fault Trigger Condition-PCM DTC Description Fault Trigger Conditions P06DA Engine Oil Pressure Control Circuit/Open Sets when the PCM detects an open on the engine oil pressure control solenoid valve circuit. P06DB Engine Oil Pressure Control Circuit Low Sets when the PCM detects a short to ground on the engine oil pressure control solenoid valve circuit. P06DC Engine Oil Pressure Control Circuit High Sets when the PCM detects a short to voltage on the engine oil pressure control solenoid valve circuit. P06DD Engine Oil Pressure Control Circuit Performance/Stuck Off Sets when the PCM detects the engine oil pressure control solenoid valve is stuck. Possible Sources Engine oil pressure control solenoid valve PCM Wiring, terminals or connectors Edited December 10, 2023 by Haz 3 Quote Link to comment Share on other sites More sharing options...
Cerberus Posted December 12, 2023 Author Report Share Posted December 12, 2023 On 12/10/2023 at 11:31 AM, Haz said: Edit: I neglected to include... DTC Fault Trigger Condition-PCM DTC Description Fault Trigger Conditions P06DA Engine Oil Pressure Control Circuit/Open Sets when the PCM detects an open on the engine oil pressure control solenoid valve circuit. P06DB Engine Oil Pressure Control Circuit Low Sets when the PCM detects a short to ground on the engine oil pressure control solenoid valve circuit. P06DC Engine Oil Pressure Control Circuit High Sets when the PCM detects a short to voltage on the engine oil pressure control solenoid valve circuit. P06DD Engine Oil Pressure Control Circuit Performance/Stuck Off Sets when the PCM detects the engine oil pressure control solenoid valve is stuck. yeah.. that's what i figured.. Thanks for the confirmation Quote Link to comment Share on other sites More sharing options...
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