One owner, I brought it new. The A/C cools nicely BUT I cannot get it to
come out the dash outlets! I am aware it is controlled by vacuum lines and
I've checked them. No cuts or cracks where they connect to the diverter
under the dash. I have not been able to locate where the vacuum lines come
from? If I could find the vacuum control unit, just maybe I could switch
the lines so the A/C is always coming out the dash outlets. Who needs
defrost in Arizona!
The one garage I took it to said I need a new heat/cooling control head at a
cost of $800. I've taken the dash apart and there are NO vacuum lines
connected to the control unit he wanted to replace.
Anyone have any idea where the vacuum lines originate? I figure there
should be a distribution type unit somewhere?
Any and all help greatly appreciated.
Do you have a digital control head? Or does it have a sliding lever for the
temp? If it has digital, it is electronically controlled by a servo which
could mean a bad control head or servo. If it has a slide for the temp, it
is vacuum controlled and probably has a leak. You did not say where the air
comes out. Is it the defrost vents only no matter what the setting? Does the
heater blow from the bottom like it should?
The control head IS digital, BUT the only servo I've found is located behind
the glove compartment and it works-OK. The servo just controls the
recirculating or vent function. I've removed the covering under the dash
and have found 2 vacuum lines that run to the diverter,located above the
floor hump , they were in good condition.
It has 4 settings Mid, Floor, Mid & Floor, Windshield & Floor; no matter
what setting I use using either A/C or Heat, it only comes out through the
Windshield and Floor.
I've removed the black plastic cover under the hood just forward of the left
front wheel well. There is a unit with 2 large electrical connectors on
top, not sure what that is? I can see a unit under it that seems to have a
vacuum line running to it, but I can not see around the unit to check for
any other lines.
ALL Your help is greatly appreciated.
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