ac blower
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
several thing to know, year of car, and does the switch vary speed on the lower ranges, but NOT on high speed.....
then IF high speed does in fact function, the flow is weak....you have one of several problems...
first is block airflow by debris in the passage after the blower and stopped on the pressure side of the a/c evap core....PIA to get to but CAN be done by removing the blower motor, and the blower speed resistors on top of the evap housing....
after all that is done, there is a ton more information about the situation...
ALL C3s have this ongoing battle...welcome to the club.....
then IF high speed does in fact function, the flow is weak....you have one of several problems...
first is block airflow by debris in the passage after the blower and stopped on the pressure side of the a/c evap core....PIA to get to but CAN be done by removing the blower motor, and the blower speed resistors on top of the evap housing....
after all that is done, there is a ton more information about the situation...
ALL C3s have this ongoing battle...welcome to the club.....
Burning Brakes
Joined: Nov 2006
Posts: 893
Likes: 7
From: Orange Park Florida
If the fan runs faster on high speed, but does not blow more air, then you either have a blockage or your under-dash ductwork is shot, or both.
A common problem is the fan shroud - it is probably filled with trash.
A common problem is the fan shroud - it is probably filled with trash.
Drifting
Joined: May 2008
Posts: 1,462
Likes: 43
From: Choctaw Country
learned from a senior member a while back on my own c3.....
http://forums.corvetteforum.com/show...4+fa n+blower
BTW, you can use "search" to find old threads. That is what I just did.
http://forums.corvetteforum.com/show...4+fa n+blower
BTW, you can use "search" to find old threads. That is what I just did.
Drifting
Joined: Apr 2008
Posts: 1,305
Likes: 2
From: Lewisburg WV
thegazman
I have a 1979 and had the problem MRVETTE described with leaves blocking the A/C evaporator. After I cleaned it out I made filters for the cowl that block debris from entering my air system. I used 1/4" charcoal filter material. Keeps debris out and filters the outside air entering my vehicle.
