It makes the noise any time and I tried turning the whole heater off and the noise was still there, but sometimes the noise is gone and then starts up and stops randomly...
my air conditioner blows hot air and my heater blows cold air. The heater will warm up after the engine has been running for awhile but when I turn the air conditioner on it takes power away from the engine but it still blows hot air. This happened all at the same time after I noticed a little...
