RE: [DML] Re: Vacuum line question

["michael townsley" <townfour@xxxx>]

Where is the heater core shut off valve?

Michael W. Townsley
# 17043
townfour@xxxx


-----Original Message-----
From: content22207 [mailto:brobertson@xxxx] 
Sent: Saturday, August 16, 2003 10:17 PM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Re: Vacuum line question

Mechanic hooked up wrong. He's running vacuum backwards through mode
switch.

Line operates heater core shut off valve. Is only active in Max A/C
mode. Runs from passenger intake rail (one device of many on big 3/8"
line), through mode switch, under console in hard plastic line, out
driver's pontoon, to heater core shut off valve.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "aaron_t_graham"
<aaron_t_graham@xxxx> wrote:
> There's a lone vacuum line that comes into the engine from the side of
> the engine compartment -- toward the back, on the left side. It's
> quite lonely back in that part of the engine compartment, so it's easy
> to see which line I'm talking about.
> 
> If I have this line disconnected, everything still seems to work just
> fine. Idle is good, acceleration is good, and all climate controls
> work just like they should. My mechanic hooked it up to where he
> thought it should be, and when he did that, lots of hissing noises
> started coming from the A/C panel mode switch area.
> 
> So it comes down to this: when that line is hooked up, everything
> works okay and the A/C mode switch hisses. When that line isn't
> hooked up, everything works okay and there is no hissing.
> 
> Any ideas on this one?
> 
> Aaron
> #1506



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