Getting my son's 164S road ready has slowed down because the temp guage reads hot. It has a new radiator, new temp switch in the radiator and a new Bosch switch in the thermostat housing. I just installed the Bosch switch this afternoon and ran it for quite a while. After shooting temperatures at different places with the infra red, I'm not convinced it is running hot, but the temp gage is reading 232F, the last small line before the max 250F. The fan comes on and cycles. It drops the temp at the radiator switch about 10F, fans shuts off, the temp goes up 10F, the fan comes back on. Everything looks normal except the gage on the dash.
Has anyone had a gage off that far? It there a quick fix for an inaccurate dash gage.
Red 1991 164S, Black 1991 164S, Red 1987 Milano, 1972 Berlina, 1973 Berlina rebuilding SPICA engine