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Blower motor???

Posted: Sun Apr 11, 2021 3:11 am
by honsonwong
After starting up my Kizashi for 5-6 minutes, I could hear a hissing sound coming from the air vents. Is this due to a problem with the blower motor or elsewhere? Any ideas or suggestions are welcome.

Re: Blower motor???

Posted: Sun Apr 11, 2021 12:29 pm
by old tech
I think what you are hearing is the air conditioning . This may be louder than normal because of incorrect charge level. If the blower motor is actually making a strange noise, you should be able to confirm the naughty blower by selecting different speeds.

Re: Blower motor???

Posted: Mon Apr 12, 2021 11:19 pm
by honsonwong
Does this mean I may need to re-fill the refrigerant? I will also try selecting different speeds to see if the sound will get louder. Thank you!

Re: Blower motor???

Posted: Tue Apr 13, 2021 9:55 pm
by honsonwong
Just an update!!
I checked the following
when I changed the speed of the fan, no difference in the hissing sound
when I lowered the temperature of the AC, hissing sound got louder
when I lowered the temperature to LO, several minutes later, it was still not cold
When I turned off the AC, the hissing sound was gone, I could only hear the sound of the air flow

In this case, I think the blower motor is fine, but don't know if it's because the refrigerant has leaked. There is also a strange smell from the air vent.

Any ideas and suggestions are welcome!! Thanks.

Re: Blower motor???

Posted: Sat May 08, 2021 1:13 am
by honsonwong
Updating.
I have refilled the freon (refrigerant) and the hissing sound was gone. Old tech was right, thank you.