Engine Mechanical problem
1985 Jaguar XJ6 6 cyl Two Wheel Drive Automatic 170000 miles

Are jag has issues, you can drive it turn it off sometimes it will start back up and somtimes it wont. If it has set overnight it will usually start right up. we have driven it for 2 days without a problem and then out of the blue it will die on you will you are driving it and then wont start up????? HELP