Hello, i have a daewoo lanos 2000 model car.my car has been to 2 mechanics now with no luck.my car will start after a while if you pump the accelerator,then it will cough and splutter until it stalls.this will continue for 5 minutes or more while i keep reving the car to keep it running and then eventually it all of a sudden runs smoothly again as if nothing is wrong. once driving normally for a good few km with no problems then it has started its coughing and spluttering again instantly,i pull over and it stalls again. is there a common problem/fault with these cars like this,maybe electrical?all the obvious things have been looked at twice or replaced i.e spark plugs,fuel, oil, fuel filter, fuel pump.please help