When I have my heater or A/C on, no matter what setting I have it on, I
can only get air coming from the floor vents, and/or defroster vents.
When I put the 'slider' on the dash vent setting, i only get air coming
from the floor vent and the side window defroster vents, but nothing
from the actual dash vents.
I've briefly looked for a hose or something that has slipped off, but
it's pretty tight in there and thought I would ask here before I rip my
dash apart.

 

"Mythic" <none@none.ca> wrote in message
news:g%Qpe.11194$_n2.992788@news20.bellglobal.com. ..
> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

You didn't mention which vehicle... we'll go on the
assumption that you have a vacuum-operated
vent system.

A question... does the venting air ever change
when you move the slider around? My system
defaulted to what you describe when the vacuum
line to the vacuum reservoir got melted... this
was right by the battery (I used a torch to melt
solder on some battery connections, dangerous,
I know). Same air venting, no matter what
position I had the control (****, on mine).
My cruise control wouldn't work, either...
dead giveaway on a vacuum problem.

My vacuum reservoir is underneath
the passenger side front bumper on my '00 XJ.
All I had to do was splice the tubing with a
piece of 1/4" ID rubber hose and all fix.

I went ahead and bought a vacuum pump
bleeder-tester... but I like tools, you might
not want to spend $30 on one. I didn't
need it to fix my problem... if all your
lines are OK, then you're going to have
to start testing reservoir vacuum (the pump
has a gauge!). The pump can be used to
test vacuum motors, too... this is the diaphragm
that moves the vent doors, changing your
air path.

I have the FSM for my Cherokee, as well as
both Haynes and Chilton for earlier years.
I suggest you get at least one of these
resources.
__
Steve
..

 

"Mythic" <none@none.ca> wrote in message
news:g%Qpe.11194$_n2.992788@news20.bellglobal.com. ..
> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

You didn't mention which vehicle... we'll go on the
assumption that you have a vacuum-operated
vent system.

A question... does the venting air ever change
when you move the slider around? My system
defaulted to what you describe when the vacuum
line to the vacuum reservoir got melted... this
was right by the battery (I used a torch to melt
solder on some battery connections, dangerous,
I know). Same air venting, no matter what
position I had the control (****, on mine).
My cruise control wouldn't work, either...
dead giveaway on a vacuum problem.

My vacuum reservoir is underneath
the passenger side front bumper on my '00 XJ.
All I had to do was splice the tubing with a
piece of 1/4" ID rubber hose and all fix.

I went ahead and bought a vacuum pump
bleeder-tester... but I like tools, you might
not want to spend $30 on one. I didn't
need it to fix my problem... if all your
lines are OK, then you're going to have
to start testing reservoir vacuum (the pump
has a gauge!). The pump can be used to
test vacuum motors, too... this is the diaphragm
that moves the vent doors, changing your
air path.

I have the FSM for my Cherokee, as well as
both Haynes and Chilton for earlier years.
I suggest you get at least one of these
resources.
__
Steve
..

 

"Mythic" <none@none.ca> wrote in message
news:g%Qpe.11194$_n2.992788@news20.bellglobal.com. ..
> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

You didn't mention which vehicle... we'll go on the
assumption that you have a vacuum-operated
vent system.

A question... does the venting air ever change
when you move the slider around? My system
defaulted to what you describe when the vacuum
line to the vacuum reservoir got melted... this
was right by the battery (I used a torch to melt
solder on some battery connections, dangerous,
I know). Same air venting, no matter what
position I had the control (****, on mine).
My cruise control wouldn't work, either...
dead giveaway on a vacuum problem.

My vacuum reservoir is underneath
the passenger side front bumper on my '00 XJ.
All I had to do was splice the tubing with a
piece of 1/4" ID rubber hose and all fix.

I went ahead and bought a vacuum pump
bleeder-tester... but I like tools, you might
not want to spend $30 on one. I didn't
need it to fix my problem... if all your
lines are OK, then you're going to have
to start testing reservoir vacuum (the pump
has a gauge!). The pump can be used to
test vacuum motors, too... this is the diaphragm
that moves the vent doors, changing your
air path.

I have the FSM for my Cherokee, as well as
both Haynes and Chilton for earlier years.
I suggest you get at least one of these
resources.
__
Steve
..

 

"Mythic" <none@none.ca> wrote in message
news:g%Qpe.11194$_n2.992788@news20.bellglobal.com. ..
> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

You didn't mention which vehicle... we'll go on the
assumption that you have a vacuum-operated
vent system.

A question... does the venting air ever change
when you move the slider around? My system
defaulted to what you describe when the vacuum
line to the vacuum reservoir got melted... this
was right by the battery (I used a torch to melt
solder on some battery connections, dangerous,
I know). Same air venting, no matter what
position I had the control (****, on mine).
My cruise control wouldn't work, either...
dead giveaway on a vacuum problem.

My vacuum reservoir is underneath
the passenger side front bumper on my '00 XJ.
All I had to do was splice the tubing with a
piece of 1/4" ID rubber hose and all fix.

I went ahead and bought a vacuum pump
bleeder-tester... but I like tools, you might
not want to spend $30 on one. I didn't
need it to fix my problem... if all your
lines are OK, then you're going to have
to start testing reservoir vacuum (the pump
has a gauge!). The pump can be used to
test vacuum motors, too... this is the diaphragm
that moves the vent doors, changing your
air path.

I have the FSM for my Cherokee, as well as
both Haynes and Chilton for earlier years.
I suggest you get at least one of these
resources.
__
Steve
..

 

ok but what kind of vehicle do you have???????????

Mythic wrote:

> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

 

ok but what kind of vehicle do you have???????????

Mythic wrote:

> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

 

ok but what kind of vehicle do you have???????????

Mythic wrote:

> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

 

ok but what kind of vehicle do you have???????????

Mythic wrote:

> When I have my heater or A/C on, no matter what setting I have it on, I
> can only get air coming from the floor vents, and/or defroster vents.
> When I put the 'slider' on the dash vent setting, i only get air coming
> from the floor vent and the side window defroster vents, but nothing
> from the actual dash vents.
> I've briefly looked for a hose or something that has slipped off, but
> it's pretty tight in there and thought I would ask here before I rip my
> dash apart.

 

I want to thank you for posting this information. I used this as a
guide and it led me right to the problem, which was also in the vacuum
tube below the battery.
Thanks again
Jim Shaw
St. Louis, MO


On Thu, 09 Jun 2005 06:46:41 GMT, "Stephen Cowell"
<scowell@sbcglobal.net> wrote:

>
>"Mythic" <none@none.ca> wrote in message
>news:g%Qpe.11194$_n2.992788@news20.bellglobal.com ...
>> When I have my heater or A/C on, no matter what setting I have it on, I
>> can only get air coming from the floor vents, and/or defroster vents.
>> When I put the 'slider' on the dash vent setting, i only get air coming
>> from the floor vent and the side window defroster vents, but nothing
>> from the actual dash vents.
>> I've briefly looked for a hose or something that has slipped off, but
>> it's pretty tight in there and thought I would ask here before I rip my
>> dash apart.
>
>You didn't mention which vehicle... we'll go on the
>assumption that you have a vacuum-operated
>vent system.
>
>A question... does the venting air ever change
>when you move the slider around? My system
>defaulted to what you describe when the vacuum
>line to the vacuum reservoir got melted... this
>was right by the battery (I used a torch to melt
>solder on some battery connections, dangerous,
>I know). Same air venting, no matter what
>position I had the control (****, on mine).
>My cruise control wouldn't work, either...
>dead giveaway on a vacuum problem.
>
>My vacuum reservoir is underneath
>the passenger side front bumper on my '00 XJ.
>All I had to do was splice the tubing with a
>piece of 1/4" ID rubber hose and all fix.
>
>I went ahead and bought a vacuum pump
>bleeder-tester... but I like tools, you might
>not want to spend $30 on one. I didn't
>need it to fix my problem... if all your
>lines are OK, then you're going to have
>to start testing reservoir vacuum (the pump
>has a gauge!). The pump can be used to
>test vacuum motors, too... this is the diaphragm
>that moves the vent doors, changing your
>air path.
>
>I have the FSM for my Cherokee, as well as
>both Haynes and Chilton for earlier years.
>I suggest you get at least one of these
>resources.
>__
>Steve
>.
>