Kenneth, There is a couple of us out here that can fix the display. My self John Hervey in Dallas, and Les out of California. Email me privatly for the cost. Not to bad. As far as the temp gauge, what did P.J. Grady say about it or did it just start. Most likley a loose connection. I don't know what you mean by hangs. John hervey http://www.specialtauto.com/