i have a starnge problem with my cooling system. The coolant light keeps coming on after about ten minutes of driving sometimes it goes off again sometimes not. The coolant level is fine and unchanging but it was bubbling over even when cold I have had a specialist look at this and he says its not the sensor and he has bled the sytem but the light is still coming on. Heater is ok, radiator and water pump are less than a year old any ideas guys?
Thanks in advance.