Whistling sound is heard from evaporator
Precautions: Precautions for Diagnosing Trouble · General safety (00)
Abnormal Noise from Evaporator
| Condition | Possible Cause | Action |
|---|---|---|
|
Whistling sound is heard from evaporator
|
Depending on the combination of the interior / exterior temperatures, engine rpm and refrigerant pressure, the refrigerant flowing out of the expansion valve may generate whistling sound.
|
Slightly decreasing amount of refrigerant may stop this noise.
Check expansion valve and replace it if faulty.
|