I have a 1999 Jaguar XJ8, hte car has 123,000 miles,there is a Check Engine light on and periodically the Limited Performance light goes on and off. The Gas gauge does not work, could this be part of the problem?
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Re: I have a 1999 Jaguar XJ8, there is a Check Engine
The gas gauge is not related, that would be a defective gas gauge sending unit in the gas tank, the check engine light indicates that one of around 200 poss faults has occured in the electronic engine controls, you will need to have the OBD 2 engine control system tested for the fualt code that is stored when the light is turned on.
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1998 to 2001 Jaguar XJ8 have a big engine design problem, timing chain tensioners are made out of plastic, and with time they brake ,causing big Damage to Engine, if you buy the car make sure those tensioners are replaced to a next generation tensioners wich are way better(made with some metal) as per gas consuption, about 16 miles per gallon in the city and 22 in the highway.
I HAVE A 99 JAGUAR XJ8 ....I HAVE CHANGED THE BATTERY AND ALTERNATOR, BUT STILL WON'T START. SHOULD I CHANGE THE PLUGS NEXT OR THE STARTER. IT HAS 110,000 MILES. PLEASE OFFER SOME INSIGHT ON THIS SITUATION.
o2 sensors often cause a rough idle at stand still. Previously my xj8 had crank case ventilation (pvc valve essentially) issues that caused the check engine w/ restricted performance. I noticed a severe drop in gas mileage as well. Jaguar dealer fixed my problems in a few hours and it was surprisingly cheap. Its worth taking it to advanced or auto zone to see what the computer says. Then decide if you want to shell out for a dealer fix or if you can tackle it yourself. BTW, just to justify myself this is my third jaguar. I have a '94 xj6 with a chevy 350 inside it, previously owned a 95 XJ6 and currently have the xj8. They are wonderful cars if you can put up with their rough times.
I've had the same problem on my 2001. It turned out to be the battery. Apparently the voltage had dropped to the point that the computer began to malfunction. I'd first go to a battery shop and have it checked under load before looking for other solutions.