Replace the throttle potentiometer
It's on the throttle body, but I would get a Haynes manual to do this procedure.
Good luck!
I've a 1995 xj6 ,but where is the opening for the glove compartment? do it have one
Everything
check starter
· XG350 (Hyundai) · XJ6 (Jaguar)
1991 jaguar jx6 will not start
Check the brake light switch adjustment.
take it to a oreillys or a advance auto or auto zone and have them check the alternator
have the cam positioning sensor checked
check for spark and fuel. If it's spark loss I'm finding building evidence of the crank sensor being at fault. Try checking this first.
most likely the CRANK POSITION SENSOR
try valet switch in 'glovebox' between front seats
Jaguar made the XJ6 car model. XG350 is a Hyundai car model.