Quote:
My chev k1500 used to overshoot at about 3 miles then drop to a mid-cold level. The needle would then go up and down like this a few times (dropping to a higher low-level each successive time) until it would settle at and hold the final operating temp.
I think this would be pretty normal if you have a large radiator with significant cooling capacity. The cool water from the radiator really makes a significant temp differential the first few times the thermostat opens.
I think this considered normal for many cars.