The other day, for the first time, I got caught in a traffic queue and the temperature gauge on my '92 plus 4 went from it's normal 80+ to 100+. I put on the heater and roasted. Today I had a run and then, once home, let the car idle until the temperature again went above 100. The fan cut in at about 105 but only briefly and then again only briefly. The differential on the "otter" switch seems very small. Would you say this is normal or do I need to change the switch.
