Never heard of a kill switch for an O2 sensor.

Could you give some more detail?

Cheers
DD

 

Check the XJS forum. Different engine management systems. It may not have a counter for O2 service.


And, the nomenclature thing. Not a kill switch at all. merely, a reset button.


Off to SMOG my Jaguar today .


Carl


Carl

 

Hi, yeah, sorry about the language...

Yes, a reset switch. To turn off the dash light. I had/have heard that there is a switch or a button, in the trunk in some, what is actually a mileage counter and at 30,000Mi it lights the switch reminding of regular service. I have checked my trunk and haven't seen this thing. Any help would be a great, help

 

Not for your 1990.

The reset capability mentioned in this thread was for older models....roughly 1986-earlier

Cheers
DD

 

Boy am I glad the european versions don't have this ****....

 

North American cars are loaded with it.

 

Get a new sensor anyway.
Walter

 

Oh, h.... yes !!!


My lumped 83 just passed CA Smog test !!!!


Carl

 

Hi Doug...

Undderstood. Any suggestions about reseting later models? Any suggestion will do. Is it just a matter of replacing and it will "reset" itself? That sounds too good, AND, too bad to be true, lol

 

Sorry, no. Nothing definitive, at least. I just not familiar with the systems used on the later XJS.

Sometimes just disconnecting the battery will clear warning lights or trouble codes.

On other cars, disconnecting both battery cables and touching them together does the trick.

If the warning light/message is displayed because the system detects an *actual fault* then replacing the faulty sensor might eventually extinguish the light, as the system will recognize the absence of the fault and turn off the light after xxx-number of driving cycles. I doubt it, as I don't think the systems of that vintage an do that....but maybe.

I'd post the question of the XJS. Someone will know the answer

Cheers
DD

 

It's a curse and a blessing.

Lambda systems are generally considered a good thing as fueling is more precisely controlled.

The downside, of course, is more systems = "more to go wrong" !


Cheers
DD

 

Yup, yes, maybe and YUP! lol,,,

Thank you Doug!

 

In the boot looking forward with panel removed.

Correct plunger is circled on the left. I was fumbling with the white protrusion on the right; obviously with no effect.
Thanks to John_Cook12 for the photo; it got me in the right area but I found myself fumbling with the wrong "plunger" for a bit. Here are a couple shots that will hopefully prevent that for someone else. Mine is an '86.