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Although thermostat could Be stuck in the open position, it can also be as simple as not enough water or a leak. Check if the gauge is hot and the air is cold. This indicates lack of water, or a bad or loose water pump belt. Also could be your actuator door is defective.
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Why is your heat blowing out cold air?
Replace Thermostat
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What do you mean by "has no heat"? No air blowing out, blowing out cold air when heater is on, blowing nothing at all? Heater not turning on? What specifically is happening?
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looking for answer
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the heater matrix is blocked
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Is it blowing cold air only or not blowing any air at all.
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Car not blowing air or heat
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My 2001 Chevy Blazer was blowing cold air when I had the heat on. My husband flushed the line to the heater core and a bunch of junk came out and now my heat works great. My 2001 Chevy Blazer was blowing cold air when I had the heat on. My husband flushed the line to the heater core and a bunch of junk came out and now my heat works great.
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That is exactly how a heat pump works in heating mode are you sure it's not a heat pump?
1998 Lincoln town car blowing cold air instead of blowing heat?
needs heater core replaced wost likely be hind the glove box
