RockyDeere
New member
My 4310 temperature gauge pinned high; Replaced the thermostat, removed the water pump and tested (perfect) as well as the fan belt, radiator, air filter etc. When idlling the temperature gauge climbs to pinned when the sender is reading 507 ohms. The water temp measures 107F at the threaded plug next to the sender on the head side of the thermostat! ....the manual indicates 40-700 ohms as range but no curve or reading. 2 dealers have no idea. Has anyone seen a gauge go bad reading high temp?? Looked over wiring with all covers off and found no signs of critter damage (evicted a few this winter)... has anyone been here before?? Opened up the gauge and found light traces of gray film inside white back cover, but looks okay... Thanks.