7B
A droning noise is heard inside vehicle, but not particularly noticeable in engine compartment
There are various types of noise, ranging from those produced in the engine compartment to those from the passenger compartment, also from rumbling noises to whistling noises.
Abnormal Noise from Tubing
Condition Possible Cause Action
A droning noise is heard inside vehicle, but not particularly noticeable in engine compartment
Faulty tubing clamps
Reposition clamps or increase the number of clamps.
Resonance caused by pulsation from variations in refrigerant pressure
Attach a silencer to tubing, or modify its position and length.