Has any one experienced total
System shutdown while
Driving? Gauges go to zero, engine shuts down. Once stopped turn off key wait a few seconds to restart and she fires up. This is random and my happen twice in a week or once in a blue moon.

Any experience or
Knowledge and f this ? Some kind of synchro or Engine management switch? Message or call me 704.907.7211

 

This is most likely to be a defective ignition switch (the electrical bit attached to the back of the actual lock) or the main load relay going home.

 

Could it also be a bad earth? I've had a number of gauge issues caused by two things, a faulty earth and degradation of one of the connector blocks....

 

Maybe ignition amplifier.
100 km withou problem, then twice on 10 km road, then going home on the rope
Have You good spark from centre of distributor ?

 

I agree with Greg, my first suspect would be ignition switch. This would kill all instruments dead. A bad ignition amplifier would not kill temp gauge.

 

Inattention when reading. Yes, it is right, temp gauge will be allive.

 

And the speedo, fuel gauge, oil pressure.

 

Yes yes all I have simplified it

 

Strangely enough, I've just had exactly the same thing happen on my car (a 92 XJR-S) this week. It would start, run, then completely cut out at random. Turns out it was the alarm\immobiliser system that was at fault. Now, I have a dealer installed Jaguar alarm system (JLM1768 ,uses key fob DAC7990), which after some online searching and thanks to others on this forum I was able to simply disable. Lo and behold, the car has since run without any issue!