I assume there is a low oil pressure warning sensor so does anyone know where it is located on the 5.0L engine. Has anyone mounted an aftermarket sending unit and installed a gauge in the engine compartment.Also with all of the technology out there I have yet to find a BT oil pressure sending unit and Gauge which would allow for wireless installation. Just thinking out loud here.

 

I wish I knew. Just chiming in to keep the thread viable.

 

The oil level & temp sensor for the 5.0 is in the sump pan. The level sensor uses ultrasound to measure the depth of oil in the sump. I can't see any oil pressure sensor.

 

OK , thanks and makes sense in determining the quantity of oil in the sump. I was assuming there would be a low oil pressure switch somewhere which would trigger a warning light when oil pressure was below say 5-8 psi. I don't know if Jag uses this type of switch but I would have assumed that there was something similar in the system. In most cars it is located either in the block near the oil filter or in the oil filter housing. In my old Ferrari it was in the oil filter mount and I had to modify some fittings to place a gauge to verify the accuracy of my electric gauge (see Pic.). I was considering doing the same on the Jag.

 

The way the workshop manual says to measure the oil pressure is to remove the oil filter and add a special tool (Oil filter adapter number 303-1451), which looks like a standard oil filter cover but has a threaded extension for a pressure gauge. Perhaps you could fit one of those permanently.

 

Very interesting . Is there a filter in this adapter or is it a machined part that is installed , then engine run and then removed. So then there is no low/no oil pressure switch on the motor. Is there a picture of this by any chance. Thanks for the info.

 

I cannot see anything on the 5.0 wiring diagrams, nor in the workshop manual, relating to oil pressure sensing. There's an oil pressure sensor on the 4.2 engines, but not the 5.0. Here's a picture of the special filter housing - I believe it takes the normal filter element:

 

Thanks for the information on the oil pressure testing tool. There may also be a threaded plug leading to an oil gallery somewhere. Thought I heard it was on the cylinder head having something to do with the oil feeding the variable camshaft system.

 

The VCT system does use pressurised oil, but I can't see any plugs on any of the exploded diagrams of the block, heads or VCT unit. That doesn't mean there aren't any.

 

OK thanks for the picture. From what I can see and I will speculate but my bet is the filter does not go inside this adapter. It most likely has a tube with a seal that fits into where the filter goes . This would be a temporary attachment to verify oil pressure. It looks like there is large threads on the front which screws into the same place where the filter canister screws in. When I go to the dealer next month for TSB updates I'll ask to see if they have one and what it looks like. I'll also ask if there is another place that has a fitting or sensor into the main oil galley.

 

I think the adapter does take the filter, otherwise the pressure would be different than with the filter in place. Here are the steps:

 

Does the owners manual reference a low oil pressure warning?

If so, it has to have a sensor somewhere.

 

Nope, nothing in the owner's manual about oil pressure, only oil level. I'm pretty sure there's no sensor on the 5.0 engine, though a loss of oil pressure might be detected by other systems that rely on it.

 

The truly informed Jaguar aficionado would have read the post from last year. An MIT engineer installed an avionics oil pressure transducer that transmitted via telemetry to a OBD link MX bluetooth. This allowed real time oil pressure readings

The transducer was placed in one of 2 access ports on the back of the engine, on the bottom on either side. either port can be drilled and tapped. My car, 2013xkr is tapped on the passenger's side.

Raytheon and a host of other companies make this tranducer at a variety of prices. Informed individuals can find these products in any aviation magazine that sells avioncs bay equipment.

ANd btw the oil sensor on the back right of the engine can't be tapped for pressure readings,

 

lmao

 

oil sensing unit on the back passengers side for 5.0 s/c

 

A fellow Jaguar owner would share the application with specifics to the form therefore enhancing the data experience for all . Maybe some pictures of the installation would be useful to the group.

 

Well first, I am not a "Jaguar aficionado", truly informed or not.

Maybe you are, or you're still trying to find your nirvana

from https://www.jaguarforums.com/forum/x...ttings-138846/


I somehow doubt that avionics transducers are readable by an OBDLINK MX
without some fancy footwork.

And if an avionics transducer can be fitted, so can a conventional automotive
transducer.

 

https://www.jaguarforums.com/forum/x...ttings-138846/

He didn't want to share which tunes did not work for him either.
However, he did want to be told which tune would work.

Seems like Quid Pro Quo is not part of contemporary mores.

No matter, we have Moscow Leaper on the case.

 

The only oil sensor of any kind shown in the workshop manual & electrical diagrams is the oil temperature and level sensor, which is located in the sump on both NA & SC engines. Obviously, as the sump isn't pressurised, that area is of no value for obtaining a pressure reading.

If you have knowledge of another sensor and its location, can you provide further detail or a picture?