For reasons we just can’t figure out the number one internet search for mobile A/C components and the number one blog post consistently read is about the function of the system’s receiver drier.
The heater control valve (sometimes called the hot water valve) is used to control the rate at which coolant flows through the heater core. The valve is located on the…
Soon temperatures will tumble, sweaters and jackets will come out and in order to be comfortable you’ll choose to turn on the heat inside your car. How does heated air get into your car?
Before draining the coolant, warm up the vehicle until the thermostat opens. Shut the engine off and place a pan under the radiator drain (the petcock) to catch the old coolant. Turning the petcock to loosen it will allow coolant to drain from the radiator. Once the coolant stops flowing, the pressure from the system has been released and you can remove the radiator cap to allow the coolant to drain completely.
A vehicle has many electrical circuits. For an electrical component to function properly, the electricity must return to the source through the ground side of the circuit. Ground paths are usually metal conductors such as wires or the vehicle frame, engine or body.
One way to check for proper coolant circulation is to check the upper and lower radiator hoses. The upper radiator hose should be hot, around 190–200 °F. (The safest and…
A good flush and fill machine is the most practical way to get out at least 90% of the old coolant. You don’t have a machine and want to do a conventional drain and fill?
One important point about antifreeze: there are now many different formulations available for use in different vehicles, and even in specific applications. It’s not just “the green stuff” any more, there’s red, orange, yellow, blue, etc.
All hoses used with mobile A/C system service equipment must be equipped with shut-off valves.
Motor vehicle air conditioning systems can release refrigerant into the atmosphere in a number of ways.
Have you ever lifted the hood of your car and noticed a label calling out specifications for your mobile A/C system? Did you ever wonder why it was there? Your car’s manufacturer put that label under the hood to provide necessary information for your service professional. Avoid removing this label from your car.