car heater blowing cold air reddit

Replacing this part can be tricky but you need to know if this is whats causing your car heater to blow cold air before you go spend money on new parts for something that may. Anonymous Jan 27 2009.

Heater Is Blowing Cold Air How To Check The Cooling System 1a Auto

So I have a few ideas on what could be causing this but I want somebody elses opinion on it as well.

. Its just blowing really cold air. Steps to take if you want to know why the heater in your car is blowing cold air. The common reasons for car heaters blowing cold air include low engine coolant broken heater flaps bad thermostats and air in the cooling systems.

Cranked up the car this morning and noticed the heater was blowing cold air. On cold days when you have to. Those engines are prone to having head gaskets leak in the early stages and force combustion gas into the coolant side which will make the heater core not work as it can be air locked.

If your car heater blows cold air and no heat there may be a problem with the switch the cable leading from the. The heating system in your car is supposed to keep the. If the car were started sat running for awhile the heater would still be blowing cold air.

Check the Coolant Level with the Engine Cold. While the engine is still cold check the coolant. The process of troubleshooting car heater blowing cold air problems isnt straightforward and quick because unfortunately a fault in any of these car heating system components.

Top 5 Causes of a Car Heater Blowing Cold Air and No Heat. If the thermostat is stuck open the engine temperature will drop below normal especially in cold weather. The symptom for that is little to no heat even tho engine is at proper operating.

My heater has slowly been taking longer and longer to warm up as. A car heater can fail in several ways but when it blows cold air the two likely causes are that the coolant isnt flowing through the heater core or air from the. This winter I noticed when idling or stopped the heater blew cold air.

In this case the check engine light should be on and. If your car heater is blowing cold air it could indicate that theres a problem with your cooling system heater core heating valves or blower fan. An air bubble can form in the heater even if there is no head gasket problem as well.

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