tmh23

Wondering what people are seeing with their oil pressure gauge. Are you seeing it exactly in the center, a little below or above center?? Seems very sensitive...last oil change was apparently a bit much oil and it was about 1/8" past center and this oil change showed a little below. Added about 8oz of oil and now it reads a title past center. The OCD in me thrives for it to be in the center!!

brg2015

The oil pressure gauge on our trucks is not real. It is essentially an idiot light that reads near the center when the oil pressure is above a certain point (not sure what that point is). Below that point, the gauge will read at the low point. On trucks with a real gauge, you can watch the pressure increase when you rev it up. That doesn't happen on our trucks.

UNBROKEN

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RL1990

Ford has been using a dummy oil pressure gauge for decades. If it's above 7 psi it goes to the middle. The PCM monitors actual oil pressure but the gauge is a dummy and so are the rest of the gauges. My guess is that Ford is trying to avoid service department visits for people who see the gauge go close to low when idling and hot (perfectly normal) and run to the dealer swearing something is wrong with their truck.

While many people see this as a negative it does have a few benefits in the digital age. For example, if the coolant temperature is rising the computer can give you an overheat warning before the engine is actually overheating. The computer's algorithms can calculate how fast coolant temperature is rising despite it calling for high speed cooling fans and determine overheating is inevitable and move the gauge to hot and display an overheat warning before engine damage can occur. Just like how the gas gauge shows empty even though there is still fuel in the tank.

NITRO-FC

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Quick story about these dummy gauges Ford uses - years ago I was in a Mustang club and a guy in the club had a 2000 Mustang GT. He installed a mechanical OP gauge using that thin capillary plastic tubing with pressure fittings. A month or so after he installed it, the pressure fitting on the engine side let go and the thing lost 4 of the 6 qts the pan held. He said the the factory "gauge" never budged....nice

I'm Broken

Apparently people think oil "full" level somehow effects pressure?

Napalm

oil being pumped out of the sealed engine is a leak and that would show some appreciable amount of oil pressure change even if it's only 5psi.

Napalm

also correct me if I'm wrong but there is real oil pressure read on some of the computers. As I understand it either of the Ecoboost engines has the OID for real, variable, oil pressure as it has a sensor. I think there's another thread about that on here somewhere. Maybe I'm confusing applications.

BadCon

For a short while I had an HP Tuners nGauge installed in my vehicle, and it had an oil pressure display that was clearly affected by RPM and temperature, and appeared fully functional. I have a 2016 5.0, and I haven't the slightest idea what that display was reading off of or what PID was being used as I haven't been able to replicate since switching to SCT, but it was there on the nGauge labeled oil pressure, and the values are what an oil pressure gauge should be displaying. It might have been some ECU inferred value, but I haven't been able to figure out one way or the other.

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