Hi all, hope someone can help with this problem we are having with a doblo 1.9 diesel non turbo. Car starts and drives fine but every now and again the engine starts hunting(revs going up and down) when this happens the engine management light comes on and also the radiator fan. When the fan goes off the light goes out and everything is fine again. Sometimes in the morning the fan is on with the ignition, and when you start it the problem is there. It can do it hot or cold and even when it is just ticking over. Snap on scanner shows no codes. Probably not related but problem seemed to start after we tried to fit a faulty cd player which put the hazard lights on. Bit off a strange one i know and the sensible thing would be to get proper diagnostics done at dealer, but just curious if anyone has had this and fixed it before i pay for codes to be read. Many thanks.