Hi all,
Hope everyone is well.
Series 3 Pre HE v12 - I have a mystery sensor/switch on B bank water rail that I'm trying to identify.
Any parts catalogues I have looked at simply show a blanking plug - no mention of the wires or switch.
It sits behind the CTS and has blue/green and black/tan wires connecting it.
Thanks in advance.
Roger

 

Being no one has responded, I'm guessing either no one knows what this is or my question was so stupid it didn't deserve a response - I'm hoping it's the former...

 

Hi,
in this forum there are no stupid questions.
I think the lack of replies is that very few have a 12 cylinder XJ. Most of us have the 6 cylinder engined XJ.

to me it looks like a coolant temperature sensor, after all it is in the water rail, but I don't know.

 

Roger,

I FORGOT.

I intended to go lookiong at my many books for that today. Our S2 had a blanking plug there, that looked OEish.

Sorry mate, I had a better offer, and the Oysters and Wine were FANTASTIC.

As Jose said, NO STUPID questions, here, just better offers sometimes, HA.

 

Roger,

That Black/Green, looks that to me, is specified to "radiator fan motor".
The other looks Blue/Orange to me, and that gets NO destination.

This I found from a colour chart from Fraser Mitchel, over on the MK X Section, where I am trying to identify a MK X "switch thingy".

https://www.autosparks.co.uk/bscc

I will look through my stuff tomorrow.

 

Hmm... are you looking at the top plug/wires grant? The blue/orange wire you spoke about is for the coolant temp sensor - the one I'm interested in is the other plug.