A/C blowing from all vents
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Joined: Jun 2011
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A/C blowing from all vents
I have an 85 vette and the A/C blows from all of the vents when you turn it on. I believe it is a vacuum and may have tracked the right one down. The vacuum hose runs through a harness and out around the starter area but when it comes out of the harness, it is capped off. Is this vacuum hose supposed to go into the firewall? If so where at in the firewall?
Safety Car
Joined: Aug 2009
Posts: 3,752
Likes: 277
From: Melbourne, Victoria, Australia
Hi
My vette is right hand drive but hope this helps, the vacuum tube comes out of the rectangular electrical connection in the firewall.
It is behind and beside at the passenger cylinder head, that is connected to the vacuum hoses on the TPI inlet manifold.
You will have vacuum going to the temp select levers and a vacuum hose going to the fresh air/recirculating damper.
My vette is right hand drive but hope this helps, the vacuum tube comes out of the rectangular electrical connection in the firewall.
It is behind and beside at the passenger cylinder head, that is connected to the vacuum hoses on the TPI inlet manifold.
You will have vacuum going to the temp select levers and a vacuum hose going to the fresh air/recirculating damper.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
That vacuum line should connect to the vacuum check valve:
It's next to the distributor on the driver's side. The hose going off toward the top on the right goes to the HVAC system. The hose going off toward the bottom goes to the cruise control.
It's next to the distributor on the driver's side. The hose going off toward the top on the right goes to the HVAC system. The hose going off toward the bottom goes to the cruise control.
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
That vacuum line goes to the AC control head. Pull it out and see what's up.
The control head opens and closes all the HVAC doors with vacuum, depending on what function you select. There is a vacuum connector on the back of the control head with about 6 plastic vacuum lines that go to the various actuators.
The control head opens and closes all the HVAC doors with vacuum, depending on what function you select. There is a vacuum connector on the back of the control head with about 6 plastic vacuum lines that go to the various actuators.
