This is interesting, I am having problems with mine, but it's the other way round. The car starts and idles fine, but once the engine is warm and the automatic choke goes off, the engine will not idle, it will cough and splutter and then cut out, you have to keep the revs up to about 2000 to keep it running. Then, if you stop the engine and try to restart when warm, it refuses to start, so you have to wait for the engine to be completely cold again. The engine isn't overheating, this problem happens about 2 or 3 minutes after starting. Any ideas?
Hya I had the same problem with my rover 416 from 97, used to speed up itself when it warmed up... I found a pipe made from rubber in the petrol induction area black plastic moulded injection thing behind the engine along the top,, had some pipes made from rubber that originally would have been glued onto the plastic pipes from new,, over time these I found had un glued themselves with heat and age,, letting air to be sucked into the petrol system.. when the engines cold, they pipes were hard and cold, after running up to temperature , the rubber pipes went rather soft and loose. letting air in, I cabled tied the ends onto the injection moulded pipes . Thats cured my air leak at warm up and stopped the running up rpm s . Try cable ties on the rubber pipe ends. . top of engine,, behind the dizzy cap and in front of the choke body parts. Cheap daft problem due to aging rubber pipes.
