airconditioning slows down....
airconditioning slows down.... after its been on for awile it feels as though less and less air comes out of the ducts....gets to the point where its turned up on 4 and its kickin air out equavelant to being on 1. i saw a title before on here about a/c slowing down but the search results netted no results. anyone have a fix for this or can tell me what someone did to correct this for you??
Joined: Nov 2001
Posts: 34,631
Likes: 2,555
From: Schiller Park, ILL Member: #317
Originally Posted by boondiggys
it sounds like your blower motor is shot
Good news is, if that's the problem it's not a hard fix. The HVAC blower motor is located under the passenger side dash, behind the kick panel. It's just 3 screws to pull and the motor comes out. I think the part is something like $85 from GMPD.
Much easier than changing plugs or something...
Originally Posted by 2001NBMZ28
Is the blower motor slowing down, or just the airflow? If it's just airflow could be the evaporator freezing up.
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TECH Senior Member
Joined: Dec 2001
Posts: 5,399
Likes: 3
From: Jacksonville, FL
I'd have the pressures read - sounds like you're low on referigerant. Once the evaporator freezes up it'll restrict air flow, plus it won't cool properly - just a fan blowing on an ice cube. Hear any "crackling" sounds when turning the AC off? I see signs all over town down here in Jax for "Free AC Check"
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Originally Posted by 2001NBMZ28
I'd have the pressures read - sounds like you're low on referigerant. Once the evaporator freezes up it'll restrict air flow, plus it won't cool properly - just a fan blowing on an ice cube. Hear any "crackling" sounds when turning the AC off? I see signs all over town down here in Jax for "Free AC Check"
Is the flow slowing down or the motor? Notice the sound of the blower motor at first and then when it slows down. If it seems to be blowing the same speed, it could be the evaporator, as has been said, or it could also be a vacuum motor for a door in the HVAC module slowly creeping back and restricting flow.
the blower motor speed does not change which would lean me toward the freezing evaporator theory. all signs point to that i just have to verify and find out why its happening in the first place. ill know this weekend.
