Out of the blue today, I noticed after running the car, when it went to idle the oil pressure light came on. Disappears as soon as I step up rpm have 97K (3.0 engine) on it. Oil level is fine and I use some of the finest quality- 10/40. Same I have used since day 1.

I assume this is the oil pressure switch and I have someone that will change it for $105 plus $10 for the part.

My question is what happens with the switch- does it just send a signal to the dash and really has nothing to do with the oil pressure itself?

What should be the oil pressure at idle?

What are the potential problems with the oil pump on these cars?

Your help is appreciated.
Thanks

Tom in Plano
2005 S-Type 3.0

 

I don't understand what you mean by "really has nothing to do with ...".

If you're lucky the sensor has failed. It's activated by oil pressure (well, what ya don't say!!).

 

Not really sure about this one, but the oil pressure switch Jaguar sanctioned to replace the too-often-failing pressure transducer on the X300 has a set-point of 8 psi.
Anyway, several have reported that a new switch fixed the problem. I had it return on first sustained run with the new switch, swapped back to the old switch with a mechanical gauge fitted, and couldn't repeat the problem in several weeks. Put it back in the wife's care with new switch fitted and there have been no further reports of errant behavior:
https://www.jaguarforums.com/forum/s...1/#post1677271

I got lost in the RHD/LHD and where the module was mounted, etc, but if either you or your girlfriend are overly fat; you may want to be aware of another postulate on what may be causing the warning light: https://www.jaguarforums.com/forum/s...roblem-181069/

 

I am sure that it could mean I have idle oil pressure problems, but no indication other than the light. I assume a switch failure or oxidation of the switch. Other than the switch and the oil pump, which I understands does not fail very often on these cars- anything else that would cause the light? It came up out of the blue.

Thanks
Tom

 

Thanks. perhaps the switch got oxidation and when you pulled it off and on- that
solved the problem.

Tom

 

Any other indication could be a disaster! In case the switch is not faulty you'd have a problem that could easily be terminal

 

Thanks.

It went away and I have driven some 60 miles since I saw the warning at idle. I got a switch and will have someone put it on tomorrow (they have a lift).
Other than the pressure switch and the oil pump- is there anything else to check?
However I fit the same symptoms that most have reported regarding the switch and the fact that it did not come back on and I have zero problems with the car, I would bet some 98% on the buy that the switch is thew problem.

Thanks

Tom

 

Update:


Replaced the with with a new one. Got some bruises, but was able to feel my way without draining the power steering or removing the ac compressor as Jag/Alldata suggest. There was oil the connector area which tells ME the membrane separation that brings the points together to FORM a closed circuit had some leakage and in gear AT IDLE ( LOWEST RPM)


TOM IN PLANO

 

covfefe?

 

Yes, we do live in the times that idiots seem to be highlighted! Many of them also work at dealerships as well as other places.

TBB

 

But did the new switch cure the LOP indication?

 

So far. I have yet to drive under the exact same circumstances which was to warm the engine fully by driving including some 70mph + and then after which coming to an idle in gear- the light will appear. However is has not shown itself again. I have attached the basic way these things work from my understanding.

Tom in Dallas