Hi there, I have a Fiat Grande Punto 2006 1.2. The problem is that at times ( mostly when cold out and on a downhill ) My heat gaudge needle would start dropping and then fall flat. This in return then puts on the engine managment light.
I have noticed that this happens when going downhill and coasting. Any help will be appreciated.
Best regards
Jacques

Jacques, May 2014

Often the only solution on modern motors is to get it onto the correct computer for a look at live data to see what readings are coming from each sensor in turn.

cdc, May 2014