My civic over the last couple of days has several problems with temperatures and I was wondering if anybody had any suggestions: 1)The heater fluctuates between hot and cold air but blows mostly cold air. It's -7 atm in Finland so I would really like to get this fixed asap. 2)The oil temperature gauge can quickly rise when I try to turn the heating on. This started just a day or so ago at the same time as the heater going kaput. Any suggestions would be much appreciated!