Hissing/whistling problems

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Car whistle after engine is off

Honda Civic 2019 SedAn 62000 miles
After I shut car off it makes a quiet whistling humming and whirring noise like a tiny motor or like a CD player makes when spinning the disc. It doesn't fade or stop either
Christina from United States 3 years ago  
CH
2 reports 

Heater problem

Honda Civic 2009 2.2 icdti 100972 miles
Slight hissing sound every minute or so coming from the area of glove box when heater is on. No hissing sound when heater is off
Chazzb from United States 9 years ago  
CH
1 reply 
Honda guy from Great Britain 8 years ago
It might be your heater fan
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Strange noise

Honda Civic 2009  178000 miles
Whenever i turned on A/C or heater i felt some kind of whistle sound coming from inside and this only happened if i turned on A/c or heater.
Nabin from Australia 2 years ago  
NA
2 reports 
Vini from Australia 2 years ago
Same issue with my car, same model
Adan from other 2 years ago
Resolvi o meu problema...o prob3lma estava no som do carro.
Eu tinha instalado uma multimidia ela estava pegando uma corrente residual e amplificando.
Eu comprei uma adaptador de RCA e (filtro antiruido) pgluguei direto no chicote da mumtimidia.

Convertendo o chicote para RCA
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