Our Carthago is great but the gremlins have moved in. It is Fiat based and the fault only occurs after a long run. Stop the engine and it will not start again. All you can hear is a click from a solonoid. It's just come back from being checked and no fault found. Leave the MH without doing anything for 30 minutes or overnight and away it goes. Only thing I can think of is the starter motor solonoid is getting hot and then just sticks. Anyone got any other ideas. Nothing on the Fiat Forum.