Been thinking of getting Superblue a new oil pressure sensor to help “celebrate” her recent 100,000 M “versary”. Lately it seems more and more often her gauge reads on the low or even very low side (but no red light) although the oil level is fine. This is esp. true when the weather outside is hot and/or she had been running a long time w/o shutdown.
As we know, the OEM-style sensor that transmits the actual pressure readings was later “upgraded” to more of an “idiot light”-type sensor that continuously reads midway on the gauge so long as there is “some” oil pressure in the system. This upgrade by Jaguar was due to a “high failure rate” of the OEM sensors.
Wondering which type you have/prefer in your 4.0 cat?
Myself, I would tend to lean toward replacing her OEM style sender with another OEM one, being a bit of a “purist” as well as wanting to know the actual reading of the pressure. However, I have found it interesting that the OEM-style sensors are relatively rare anymore when it comes to vendors, and I even checked a few of the usual suspects (i.e. sellers of only Jag parts) and was surprised to find the upgraded version of the sender is the ONLY version they sell. So, that fact alone makes me think that the great majority of XJS owners must prefer, or at least are happy with, that version. Also, and I don’t know whether this plays a part in that “inventory decision”, but the OEM-style sensors that are still out there typically sell for 3x as much $$ as the upgraded version, or even more.