Reasons Your Car Heater May Be Malfunctioning
If the car heater is not working, it will, either blow cold air or it will not blow air at all. If it blows cold air, then something is preventing the hot antifreeze from getting to the heater core.
Why isn’t my car heater working?
This could be a valve or a switch. Or, the heater core may be plugged. Which might end up being a problem on its own. You will need to check the coolant level but do that when the engine is cold. If the coolant level is low, adding some more coolant can solve the issue.
In case the car heater doesn’t blow at all, then you will have either a bad blower motor or something that doesn’t let the motor get enough power. If the blower motor is getting power, however, the issue might as well be a bad blower. But if there’s no power in there, then you might have issues with the blower resistor, switch, fuse or power. Any of these might very well be the culprit.
Of course, these are only a few of the causes that can lead to this type of problem. There are times when the blend door or the heater valve can be stuck. And even a bad switch or improper linkage might end up being a problem. That’s why the best thing that you can do is to talk with a mechanic and find a way to solve the problem. The faster you can do that, the better it will be for you.
What does it mean if my car heater isn’t getting hot enough?
Usually, if there is a car heater problem, the heater core will be the main culprit here. If that’s the case, you need to replace the heater core. You can try to patch it or at least make it work for a tiny bit, but in the end, the best thing is to replace the heater core with a new one.
Sometimes the issue can be caused by a heater core leak. The coolant needed to provide you with heat is leaking, and thus you are unable to use your heating system. Even if the car heater is getting a bit hot, it won’t be able to generate the heat you need for the entire vehicle. Working closely with a professional will help solve the problem quickly and with great results.
Can a Stuck thermostat cause a heater to not work?
The thermostat is a valve that you can find in the cooling system. It’s designed to stay closed when the engine is cold, and it helps create a coolant circulation path. Its primary focus is to heat up the engine, and it helps lower the emissions generated into the air as well.
Normally the thermostat needs to open when the engine reaches the optimal temperature. However, if you have a stuck thermostat, the valve will not be moving properly. A stuck valve is going to cause the heater to not work the way you want it to. Every defective thermostat will end up delaying the warm-up process, and it will also make heat generation pretty much impossible.