quote:Originally posted by JFB #05177:
I haven't looked closely at the gauge wiring yet, But resistance sender type gauges would be sensitive to system voltage changes and to inadaquate grounding.
giving the grounding problem history with other circuits, that would be the first I would look at. then look at what the battery voltage was doing when the gauge indication was changing without a real temperature change
Agreed. You have an electrical issue. Probably nothing to do with the actual engine temperature.
Doug M