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AC and Heat work but barely any air BLOWS

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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

AC and Heat work but barely any air BLOWS

 
Old 03-11-19, 03:54 AM
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Luxurious
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Default AC and Heat work but barely any air BLOWS

as the title states.

the ac and heat work awesome in my gs.

even on the highest setting, you can hear the fans working hard but barely any air blows out.

the main two vents blow pretty much nothing as well as the driver side. passenger side blows fine.

i'd like to fix this and idk if it's the servos and if that's it, which one..?

all different modes for the HVAC work fine

if not, what else can it be or what's it typically?

Last edited by Luxurious; 03-11-19 at 03:59 AM. Reason: forgot something
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Old 03-11-19, 04:13 AM
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Amazon Amazon

Could this be it? Don't want to blow money for no reason if you know what I mean.
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Old 03-11-19, 07:04 AM
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If you know the motor is blowing at 100%, and you feel nothing in the dash... any chance it's all going up to the windshield, in defrost mode? When we have front/defrost on, we can barely feel any air coming off the windshield, or from over the dash.

At least that's a diagnosis, even if it's not a fix.
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Old 03-11-19, 11:48 AM
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well this blows
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Old 03-11-19, 05:23 PM
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Start by checking your cabin air filter. I see this a lot from customers. A rodent gets in and makes a nest. Then barely air can flow through.
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Old 03-11-19, 06:56 PM
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Originally Posted by TrueGS300 View Post
Start by checking your cabin air filter. I see this a lot from customers. A rodent gets in and makes a nest. Then barely air can flow through.
Checked it and it's alright. Gonna buy another one just for a peace of mind but I ended up buying that module so hopefully that fixes it. I will update this post if it does work though.
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Old 03-12-19, 04:27 AM
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Still going with.. if you hear the motor blowing at full blast, the air is either going somewhere (such as the windshield), or nowhere (such as a blocked air bellow).
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Old 03-12-19, 11:23 PM
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Just a side note on those replacement cabin filters, the carbon style filters I have had in the past really slow down the air flow. I run just regular ones now on and more air flows with those. Those thick carbon filters also created a damp smelly smell if it was raining hard since those filters acted like a sponge.

You can always pull the cabin filter tray out and see if the blower is pulling air.
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