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Why would a back heater blow cold air and front heater blow hot air in a 2003 Chevrolet Suburban?
The front expansion valve is clogged.
If the heater works but blows cold air and heater core is good what do i check next?
Get the air out of your heater core.
Why does your 2003 highlander heater blow cold air?
A 2003 Highlander may blow cold air due to several potential issues. Common causes include low coolant levels, a malfunctioning thermostat, or a blocked heater core. Additionally, problems with the heater control valve or the blend door actuator can prevent warm air from reaching the cabin. It's advisable to check these components to diagnose and resolve the issue effectively.
How will the heater react if the heater core is stopped up?
Your heater will blow cold air only.
Why does rear heater in a 2003 Tahoe blow cold air while front heater blows hot air?
The rear heater in a 2003 Tahoe blowing cold air while the front heater blows hot air could be due to several reasons. Common issues include low coolant levels, a malfunctioning rear heater core, or a problem with the controls that regulate the rear heating system. Additionally, a clogged rear heater core or an airlock in the coolant system might prevent hot coolant from reaching the rear heater. Checking coolant levels and inspecting the rear heating system components is advisable to diagnose the issue accurately.
What causes a cars heater to blow cold air?
THE CAUSE for this is that when your cold air is on the petrol is used to create air. and that is how cars create cold air
Why does cold air come from the heater?
possible clogged or damaged heater core
Why does my 2003 dodge stratus heat work but when i stop at a light it shoots out cold air?
Check your radiator coolant level. On some cars, low coolant will let air bubbles into the heater core which can result in intermitant cold air bursts.
What is wrong if cold air blows out when heater is on?
I assume your car heater is blowing cold air, when the heater is on. It seems that, you have air on your coolant. that air pockets blocks the cooland to travel through your heater. it may be a sign of a bigger problem such as blown head gasket in the old cars, such acura legend
Why is the heater in my 99 ford windstar only blowing cold air?
The most common reason the heater is blows cold air on a 1999 Ford Winstar is a bad thermostat or blocked heater core.
Why is your 2003 Chevy S10 extreme blowing cold air from the heater?
The most likely cause is that your air mix door has malfunctioned, and will not change from ac to heat, but it is possible that your heater core has become blocked, or that there is a water valve in the line that has become stuck.
What would cause a 2003 Buick Century's heater to blow cold air when idleing but will blow warm air when moving?
Probably need to add antifreeze. Check the Radiator not the overflow tank. If you are low on antifreeze it will not circulate through the heater core.
