What is the purpose of the sensor located by the oil filter?

VM 2.5 WAS USED IN 1999 JEEPS
SEEN IN EUROPE
OR AS SOME SAY
located behind the oil filter assy above the engine mount
13PSI IS MIN,FOR SENSOR TRIP. JEEP XJ
THE SERVICE MANUAL SHOWS IT HERE
FIGURE 26 LHD 2.5VM 1999 YEAR JEEP

There's a pressure relief valve located at the oil pump outlet. Its purpose is to prevent very high pressures... It then pushes pressurized oil through the oil filter and into the engine. I would have that checked.

You're vehicle has two sensors for the oil,an oil pressure sensor switch & oil pressure sensor.If oil pressure gets below 6psi,the oil pressure sensor switch will turn a dash light on to let you know the pressure is at a dangerously low amount.So if you've got a dash light on,the pressure sensor switch needs to be replaced.Its located to the right of the oil filter housing,on a 2.0 liter.Its located to the left of the oil filter housing,on the 3.0 liter.
If your oil pressure gauge is reading inaccurately,you need to replace the oil pressure sensor instead.Its located near the ac compressor.

great , 2nd post, adds OIL.
now we know its ENGINE part, great.
on most cars, its on the side of the engine. to the OIL gallery main rail
on purpose.
no engine stated, you do know that jeeps are sold with many engines.
2 or 3 or more if and export.
the I-6, 4.0L is on the right rear, in plain site.
https://www.techauthority.com/en-US/Pages/Home.aspx

state side, usa.
we have 4.0L and 4.7L (v8)
apples and oranges. straight 6 or V8?

the 4.7L
seen here free, page PDF #126
see gallery drawing. see id 2, "oil sender"
its just above the filter. on front of engine.
click ENGINE here.
then again, on page 128, a photo.
infact if you unplug it the sender connector will hit the filter casing.

http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service

check near the oil filter.

On 3.0L OHV engines, the oil pressure sensor is located on the left side of the engine block above the flywheel. On 3.0L DOHC engines the sensor is located on the left side of the engine block above the oil filter. On 3.4L DOHC engines the sensor is screwed into the oil filter adapter. The oil pressure sensor operates the oil pressure warning lamp.


Fig. 1: Location of the oil pressure sensor-3.0L OHV engines


Fig. 2: Location of the oil pressure sensor-3.0L DOHC engines



Fig. 3. The oil pressure sensor-3.0L OHV engine

Hope help with this (remember rated this help). Good luck.

My earlier problem was instantly solved by Grue Thanks. my problem with the 2 sensors required a cash commitment and this is why I changed the engine myself ( lack of funds) However I did research on the web and now completly know how the senders work w/gauge & other with fuel pump relay and ECU.there location and time delay &
power source and fuse location.Thang you for your help.

if it shows low oil level its possible bad "level sensor "located on oil pan.if it shows low oil pressure possible oil "pressure sensor"

To start just pop off the front half of the plastic engine cover. The oil filter is located up front; it's the black circle on the right-center-front.



You should loosen the oil filter with the cup wrench before you start the extractor. That will let the filter drain completely and let the oil flow more freely.

If you have a distributor with a cap and ignition wires on it, you don't have a "formal" cam sensor. Later models do. However you do have a pickup coil under the distributor breaker plate that pretty much serves the same purpose. The cam sensor on later models replaces the distributor ...on 4.0 engines it is right in front of the oil filter where the distributor was.