Air conditioning failed and had to be replaced (reasonable cost reconditioned)
Rear drivers side window does not work.
Electric aerial has intermittent fault.
Speedometer stops working for a few seconds now and then.
A real pleasure to own, this car is the subject of interest wherever I go.
Great power delivery, smooth as silk.
Handling is remarkable for a car this big.
Nothing but comfort and luxury inside, the climate control is a bonus in this country.
I have exactly the same problems with my 1984 Jaguar XJ6: Driver-side rear window doesn't work, speedometer only works sometimes and air-conditioning doesn't work. I thought these were just age-related problem, but I've read another review somewhere with the same problems. Defaults of that year model? My Jag has no other problems.
I don't seem to have these problems, other than the AC thing. Mine seems to be the wire into the fuse block.
The XJ6 is an excellent car. I've had mine for 6 years now and I plan on keeping it a lot longer.
I have to agree the XJ6 is an epic car, but i'll tell you what I done with mine. I raced it as a banger on a tarmac oval track in the UK. It looked the part when I turned up at the track with my XJ6 on the back of my hiab, it also performed on the track. I had a Ford 2.8 V6 motor fitted to give more hitting room in the front, I followed about 3 people into the fence and reversed out again and carried on going, that's just how strong the front end is. It lasted all day until the DD, where I got put away in the fence at quite a speed, the back wheels were up behind the drivers seat nearly and there was a clear print of the front of a Granada in the back of it. All in all the XJ6 is an epic car, but in my eyes is better off on the banger track!!
I have the same problem with my jag. How did you fix your problems?
I have had mine since 1997 and it been pulled apart and lots of cash chucked at it and everything works great. I would say most of your issues are age/maintenance issues. Th window switches are easy to fix, pop them out and give them a clean up. Great car that's why I keep it.
I have an '84 Sovereign with some similar problems. My speedo stops working sometimes, but I'm begining to think this may be heat related. The cruise control is weird in that it takes a few minutes to start working after I hit the button, when it does actually work. I'm also having some real problems with the headlights, when I turn on the high beam only one of the centre lights comes on and one of my headlights drops from drive to park. Any hints on these would be great as I can't find an auto electrician who knows what he's talking about.