Your heater is not working on your rover 400 only cold air what can be the cause?
If you are absolutely, positively sure that your coolant level is not low......then your heater core could be plugged. Or the control that turns the coolant flow on/off to the heater isn't working. Make sure the control is working, the flush the radiator. Should cure the problem.
It's not normal. It is possible that the heater in the humidifier is not working, resulting in a cold airflow delivered to the mask, which might cause you to shiver. If the heater is working and you still find the airflow too cold, you may need to use a heated tube to ensure warm air delivered at the mask.
Is there anything besides the blend door that would cause the heater to blow cold air on a 99 expedition such as a vacumn or electric valve or relay?
Why does the low pressure A C line turn white and very cold but the inside of the car does not get cold?
Make sure the heater is not on, sometimes the door in the heater/ac box is not working properly or the valve controlloing the hot water to the heater is not stopping the flow. An ac will not out perform a heater. The last thing it could be is that the evaporator is freezing up, or there is a clog in the line somewhere.
Will a cracked head gasket on a 1996 Subaru Legacy L 2.2L cause the car to overheat and the heater to blow out cold air also?
YES and No Yes if you are going to be working on the gas water heater and No if you are working on a cold water line and if you are working on a hot water line you can shut off the gas or electric to the water heater so in case your water heater drains but what I usually do is just turn the water heater's water supply valve off.
Why does your 2003 Honda Accord heater blow cold air through the defroster vents and warm air through the dash vents?
The most likely cause is an 'Air Lock' in your heater matrix, probably caused when you changed the thermostat. There are 2 ways of dealing with this; Run the engine, with the heater temperature setting on cold, when your engine reaches normal running temperature, open the heater valve to full. This can work sometimes. For this second method, you need the engine cold: Remove the hose that connects from your cylinder head to your heater…