There are several reasons why your car is blowing cold air heating can, but heat. It is important to understand how the heating works in your car before you can begin to try to diagnose why it does not work. First, there is no electric heater in the heating system in automobiles, as used in portable heaters in the apartment. The part that is the heat into the interior called the heater core. A heater core can be thought of as a miniatureRadiator. The car engine coolant flows through the heater core, while the fan (as fans), blowing air through the heater core fins. When the air blows through the heater core fins, it is heated to heat the interior.
Start by checking the coolant. As I said, is what has already heats the coolant heater core. So, if the coolant is low, it may not be a sufficient amount of heat to transfer heat to the air passengerCompartment. Since it is cold outside, little coolant can not affect significantly the operating temperature of the engine so that you are not alerted to a problem with coolant temperature gage on the instrument panel. Once the coolant is full, feel the heater hoses that pass through the firewall. With the engine at normal operating temperature, the two heater hoses are hot to the touch. If only one is hot, it means there is a blockage in the heater core or thereAir trapped in the heater core. With a funnel Lisle coolant is helpful in cleaning up the air from the cooling system. If the coolant is actually brown, neglected, or "stop leak" at some point been used, the heater core could be stopped up. The blockage can sometimes be opened to flush by removing the heater hose and a garden hose with a syringe to the heater core out. If neither of the hoses are hot to the touch, it could alsomalfunctioning heater control valve if, following the model of the work you are. Verify the existence of a heater control valve by the heater hoses back to the engine. Sometimes a vacuum line caused a break there is no vacuum to operate the valve. It should also be noted that if this is your first winter with this car (and you are not with the car repair history), the owner would have by-passed the heater core due to a leak. If a heaterCore leak, in general, they wet the passenger side floorboard. Changing the labor costs for heating cores is usually expensive, so sometimes people loop the heater hose and bypass a leaking heater core instead of a repair on the right.
"Handheld Vacuum"
Next consider adequate ventilation. Once you are sure to flow the heater core is always hot water, read the following information. Doors inside the heater are case either by electrical motors, cables or controlsVacuum motors. Adjust the heat to control both extremes while listening for the movement of the blend door. With a cable operated heater door, it is easiest to knock at the door when it closed hearing. When the door is not in operation, find the door, the air flow through the heater core controls. If there is an electric motor that controls the door can tap it sometimes make it temporarily for testing purposes. Vacuum-operated engine needsVacuum to work so with the help of a hand-held vacuum pump for the test is usually recommended. When the vacuum motor is not in possession of a vacuum, the membrane is leaking replacement needs. To be needed further into the control head function diagnoses and diagnosis, specific repair manual information. But hopefully the foundations laid down in this article has helped to get you started on the right track.
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