I live in Denver and park outside and leave the house at about 645 am...usually between 10-40 degrees. I let the car "warm up" for about 5 mintues at least before I leave, and it doesnt get warm. The heat does not blow until ive been driving for like 20 minutes and thats only sometimes. What could this be? I need to change my O2 sensor behind the cat but that wouldnt cause this would it? Any input appreciated.
Thanks
Thanks