My Wrangler 4-banger runs really cold blooded. Even in hot weather; it barely gets to 210 degrees. Try a changing the thermostat for a hotter one. Also, in really cold weather, I block off about 2/3 of the radiator with a piece of cardboard, which bring the coolant gauge up to about 1/2 way and gives me some decent heat. Hey, it's a Jeep. If you want too much comfort, you should be driving a Toyota.