Question about Chevrolet Blazer
New thermostat, waterpump, heater core flushed clan and clear, new vacuum lines new vacume reservoir, new control panel still no heat
Heat and air actuator
This could be the problem, in center under the dash.
Posted on Nov 25, 2013
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Posted on Jan 02, 2017
The heater only blows HOT air when set on defrost or floor settings. If you have the lever set for vent, only cold air will come out. Check to make sure you set the controls to floor or defrost. This is standard for all Festiva's.
Posted on Nov 16, 2008
SOURCE: heater blowing cold air
squeeze the hoses to get any air bubbles out and refill coolant as necesary. are you sure you put thermostat in the right way? may be backwards. also may be your sensor.
Posted on Jan 04, 2009
SOURCE: 96 audi a4 heater blows cold air
you have air in the system!! you have to unbolt the filler tank and lift it 5 inch higer first. then loose the right hose on the heater core( this hose have and hole to bleed the system) and then put antifreeze until the antifreeze will go out of the hole then re install the hose to the heater core, then ajust the level correcty
Posted on Feb 05, 2009
I don't know your vehicle, but does it have a blower door tucked in where the heater core is? If it DOES and that's broken then it could be the whole problem. It would mean it isn't switching from the A/C side of things to the heat side of them. Hope this helps, good luck! Also, just looked up the proper name for what I'm talking about, it's called a "blend door" and I think your car has one. It's what I would check, again, good luck!
Posted on Jan 20, 2010
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