I don't know If I should make a new post but I am having this exact problem and it is driving me beeping crazy and hunter and cuthill appear to be nice blokes but if only they could fix it without re mortgaging my house.
97 disco v8
I tested parts for months with no luck so I passed it onto them. They have replaced the engine ecu, coil, amp. Leads, plugs.
The original issue was you could drive for an hour or so and the car would start chugging coughing then die and refuse to restart. Leave it for a few hours come back and your good for another hour. Since they changed the ecu it will randomly die hot or stone cold. If I cold start and it's running terrible, give up and walk as it will stop in 5 and won't start for hours.
I read above to change the temp sensor ?
Please help before my wife says it's go to go.

