95 740 running too cold
I have noticed the past few days that my 95 740i is running too cold. Sometimes on short trips without highway driving, the temp gauge will only reach the 1/4 mark. At times the gauge will make it to the 1/2 or straight up mark, but will fall back again to the 1/4 mark. Also, there have been times when the car idles poorly at stop lights. This poor idle seems to only happen when the temp gauge is showing a low temp. I've checked to coolant and its fine. I haven't checked the thermostat yet, but I've also heard of a coolant temperature sensor located someplace under the hood. Any thoughts on what the trouble could be? Where is the location of this coolant temperature sensor?