What does AC expansion valve do?
The expansion valve removes pressure from the liquid refrigerant to allow expansion or change of state from a liquid to a vapor in the evaporator. The high-pressure liquid refrigerant entering the expansion valve is quite warm. The orifice within the valve does not remove heat, but only reduces pressure.
Can a bad expansion valve cause an AC compressor to run?
AC compressor constantly running. A constantly running compressor is another symptom of a possible problem with the AC expansion valve. If the AC expansion valve fails or sticks open, it will cause the compressor to pump refrigerant through the vehicle’s AC system, even when it may be undesirable for it to do so.
Are there any problems with the Honda AC compressor?
Honda engineers know the compressor is poorly placed and Honda knows this and should make things right for all these failed systems. Honda is surely losing any repeat customers because of this. Me being one, just got a Volkswagen as a second vehicle. 26 people found this helpful.
What are the symptoms of a bad a / C expansion valve?
The most recognizable symptom of a bad A/C expansion valve is when you turn on your air conditioner and warm air starts blowing out of the vents. This would obviously mean that not enough refrigerant is making its way to the core of the evaporator.
When to replace the a / C compressor in a Honda Accord?
The compressor can wear out and require replacement; this can take the average backyard mechanic about an hour to complete. Evacuate the A/C system with certified collection equipment by taking your Honda Accord to a garage or oil-change facility.
AC compressor constantly running. A constantly running compressor is another symptom of a possible problem with the AC expansion valve. If the AC expansion valve fails or sticks open, it will cause the compressor to pump refrigerant through the vehicle’s AC system, even when it may be undesirable for it to do so.
The most recognizable symptom of a bad A/C expansion valve is when you turn on your air conditioner and warm air starts blowing out of the vents. This would obviously mean that not enough refrigerant is making its way to the core of the evaporator.
Where is the a / C expansion valve located in a car?
The A/C expansion valve is found within the air conditioning system of a vehicle. The purpose of the valve is to manage how much refrigerant liquid can flow throughout this system.
Can a bad or failing expansion valve cause unmetered refrigerant?
Frost on AC evaporator or coming from the vents. Another symptom of a potential problem with the vehicle’s AC expansion valve or orifice tube is frost coming from the vehicle’s vents. If the AC evaporator or orifice tube malfunctions, it can cause refrigerant to flow unmetered through the vehicle’s AC system.