Question about 1995 Jaguar XJ6

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Problem with 95 jag XJ6

Help! I have a 1995 Jaguar XJ6. A week ago it would not start (turning over fine, just wouldn't grab). I towed it to the shop where I have it serviced and they said that it was the downstream oxygen sensors - they would be $800 each from the Jaguar dealership - ah! I ordered two 2 senors from that the rep assured me were rigth for my car. The mechanic put them in and the car was running great until yesterday - it won't start, same senario as a week ago. says to return the O2 sensors for a full refund but even checking the VIN number of my car they are certain that they are the right ones. The diagnostis says that it is the O2 sensors. :-( I don't know what to do. Can anyone help?

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  • knick893 Aug 12, 2008

    degreased and sprayed water in engine compartment car would not start for about 12 hrs, had always been bump start now took several spins of stater wouldnt shift, turned off engine restarted and shifted. drove car aprox 100 miles turned off ignition and have never had fuel or fire since, tryed crank and cam shaft position sesors still it no startie! now 32 months later and my old 300 e benz getting tired its time to solve this hopefully with min *** sistance from my friendly local jag dealer help!


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My 1997 XJ6 is giving me a problem for the last 3 weeks .. see this problem listed below ..
I am going to try the Champion or Bosch spark plugs possible solution which worked for Scotty61 .. my car was going perfectly but stalled 4 times on a Saturday .. was ok for a short drive on Sunday .. and then would not start on Monday .. but the plugs had done 10k miles .. I also need the 6 gaskets that are recommended to be changed when spark plugs are changed ..

The car starts now but will stall again if left idling for a few minutes .. and will stall if I try to rev up sharply .. runs ok ish at 2000 to 3000 rpm ..

I hope it is the spark plugs .. and will post solution if I sort it out .. any suggestions and help are welcome ..


Posted on Oct 21, 2008

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I serviced my X300 4.0 litre Jaguar and steam cleaned the engine. It would not start afterwards and eventually had a mobile jaguar specialist who was convinced that it was that I cleaned the engine that was the problem. We replaced every major engine compenent from his car I.E. all the sensors, air temp intake, lambda (02) sensors, crank, engine management computer all to no avail.
After 6 hours replacing everything we took it to the main dealer only to find that it was the spark plug make!!! We changed them to Champion and it fired and ran first time!!!!
Apparently you can only use Champion or Bosche spark plugs as the engine doesn't like the cheaper ones?!?!?! Difficult to believe, but it seems to be the case as I've never had a problem since.
It cost me over £600 to fix this problem.

Posted on Sep 15, 2008

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Had this problem before and found it to be the crankshaft sensor. This would be cheaper fix than the Lambda sensors.

Posted on Aug 09, 2008

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