Pull out the cluster and buy a new temp gauge (fordpartsonline.com- $26 shipped). Isn't really that hard to replace.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ
