OT: Auto AC

[The Daring Dufas]

On 7/27/2012 4:56 PM, Meanie wrote:

I had to replace the expansion valve on the little Honda belonging to my
friend's daughter. The darn thing was behind the glove box and a bit of
a pain to get at. If you can get some one who understands R-12
automobile AC systems he/she/it can determine by the gauge readings if
there is a restriction in the refrigeration circuit that could be caused
by a defective expansion valve. After I replaced the TVX and
refrigerant, the AC in the little car put out ice cold air. ^_^

TDD

[Oren]

On Fri, 27 Jul 2012 18:53:08 -0400, "Meanie" <MB@gmail.com> wrote:


I don't blame you for determining "check with more knowledgeable
people first."

Who has the stick or who has the [Only registered and activated users can see links. ]?

--

[Stormin Mormon]

Low air flow. Well, things come to mind.
* Selector lever set wrong
* Air filter clogged (under the dash, some cars have them)
* Evaporator clogged with dust
* Evaporator frozen.
* Fan clogged with dust, or turning slowly

Christopher A. Young
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"Meanie" <MB@gmail.com> wrote in message news:juv62b$stu$1@dont-email.me...

"Stormin Mormon" <cayoung61***spamblock@hotmail.com> wrote in message
news:aGEQr.174615$OB4.95826@news.usenetserver.com. ..

'93 Honda Civic - Still has R-12 but I have replacement freon. I don't want
to convert unless I really need to.

Yes

Will check.
Good advice.

Thanks

[Stormin Mormon]

Most of the time, when the freon is low. You get good air flow, but it's
warm air. I'd check freon, last. From what you write, it's possible, but not
all that likely.

Something to test: After the car has been turned off for a while. Take it
for a drive, and turn on the AC. Does the air flow a lot at first, and then
get less and less?

Christopher A. Young
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"Meanie" <MB@gmail.com> wrote in message news:juv64l$tao$1@dont-email.me...

A leak was my first thought. I have a can of dye and thought one of the
first things to do was check for leaks before I tried anything. But I wanted
to check with more knowledgeable people first.

[Stormin Mormon]

The same fan works the AC.

Why Greg wanted temps at different fan speeds. If there is low freon, or
bad compressor, it might be colder at slower fan speeds.

Christopher A. Young
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"Meanie" <MB@gmail.com> wrote in message news:juv6ao$ud8$1@dont-email.me...

When referring to fan speed, there isn't a separate fan for the AC, is
there? The fan speed for the heating/cooling system is working fine as I
increase from 1 to 4. The heat was great last winter. Unless there's
something different, I think it's safe to assume the fan is fine.

[Stormin Mormon]

Some cars have a low side cut out, which might turn off the compressor if
there is an expansion device problem.

Christopher A. Young
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"The Daring Dufas" <the-daring-dufas@stinky-finger.net> wrote in message
news:juv6m8$r2$1@dont-email.me...

I had to replace the expansion valve on the little Honda belonging to my
friend's daughter. The darn thing was behind the glove box and a bit of
a pain to get at. If you can get some one who understands R-12
automobile AC systems he/she/it can determine by the gauge readings if
there is a restriction in the refrigeration circuit that could be caused
by a defective expansion valve. After I replaced the TVX and
refrigerant, the AC in the little car put out ice cold air. ^_^

TDD

[The Daring Dufas]

On 7/27/2012 8:23 PM, Stormin Mormon wrote:

It was a common failure on some of the Honda cars and unusual because it
was a real live TVX valve like you might see in a refrigeration or
stationary AC system. I got a good price on the valve and a restriction
of course, on the high side will drop the low side pressure. I actually
started disconnecting things and blowing nitrogen to help track down the
restriction since I'd never worked on a Honda system before. I finally
found the TVX buried behind the glove box. ^_^

TDD

[Larry W]

In article <bGEQr.174616$OB4.56693@news.usenetserver.com>,
Stormin Mormon <cayoung61***spamblock@hotmail.com> wrote:

And you should too.



--
When the game is over, the pawn and the king are returned to the same box.

Larry Wasserman - Baltimore Maryland - lwasserm(a)sdf. lonestar.org

[trader4@optonline.net]

On Jul 27, 9:20*pm, "Stormin Mormon"
<cayoung61***spambl...@hotmail.com> wrote:


In line with the above, first thing I'd do is see if
the fan puts out full air flow on other settings,
ie heat, defrost. Put the fan on high and see
if there is air flow coming out the footwells or
vents by the windshield. That will rule out the
fan. Is the fan making typical full speed sound?

If the fan is working, then check on AC mode
for cold air coming out the wrong place, ie
footwells or windshield vents.

If there is no air coming out, then it has to be
either the fan isn;t running or one of the movable
flaps that almost always get positioned via
vacuum isn't moving into the right position.
That could be due to a bad actuator, vacuum
hose leak, or some failure in the control
circuitry.

[trader4@optonline.net]

On Jul 27, 11:11*pm, The Daring Dufas <the-daring-du...@stinky-
finger.net> wrote:

None of the possible expansion valve problem has
anything to do with the fact that the reported problem
is LITTLE AIR FLOW. If he had plenty of air, but it
wasn't cool, then it could be the TXV or something
else in the refrig system.