Weird A/C behavior

[Doyt W. Echelberger]

I think you are right.  Gotta start my 300 mile trip. More later.

Doyt

 >>>>>>>>>>>>>>>>>>
At 08:26 AM 8/16/2002 -0400, you wrote:
>--
>That vacuum servo in the evaporator box only adjusts the amount of air
>going into the HVAC system from either outside or inside the cabin.  I
>suppose if the vacuum leaked there, it could reduce vacuum available to run
>the other parts of the system.  But if the servo is just moving itself
>because it's detached, I wouldn't think it would have any effect on which
>course the air took subsequently in the system.  That's managed by the
>heater core box flap controls and the servo motors under the dash behind
>the radio, I think.
>
>At 07:16 AM 08/16/2002 -0400, Doyt W. Echelberger wrote:
>
> >When I took a few hours to clean out the leaves (by opening the under-dash
> >hinged door behind the glove box) I found the hose to the vacuum solenoid
> >disconnected and dangling, and the solenoid was loose in it's plastic
> >support cage. I used epoxy to attach the solenoid to it's cage and to hold
> >the hose to the solenoid. This fix didn't change anything in the way it
> >worked, so I'm going to go back under with a flashlight and see if I have
> >any new insights while upside down, curled up like a pretzel. And I'll try
> >the "Econ" and letting up on the throttle trick. Be assured, you will all
> >hear of any success.
> >
> >Let's stay with this until we get it working right.  Thankfully, the
> >default position does cool the cabin fairly well on my car, most of the
> time.
> >
> >Doyt Echelberger
> >87 5ktq in hot and humid Ohio
> >
> > >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> >At 05:09 AM 8/16/2002 -0400, Larry Leung wrote:
> >>Paul, Doyt,
> >>
> >>I have a combination of your problems. I have the ability to get cooled
> >>air through the dash vents,
> >>but after awhile it blows out the defroster and floor (though not too
> >>strongly). I have found two things
> >>restore things to the dash (basically Paul's trick, turn the CC to ECON,
> >>back off the throttle (raise the
> >>vacuum), air out the dash vents again, turn back to A/C), or raise the
> >>set temperature to the point the
> >>fan doesn't run at full speed. I BELIEVE that it's a vacuum problem,
> >>however I have yet to trace all the
> >>leaks in the car's system (i.e. I don't quite pass the dipstick test) so
> >>I'm not sure. Perhaps it's a leaking
> >>servo under the dash. The problem is it's WAY too hot to work on the car,
> >>especially under the dash
> >>under the greenhouse in the hot sun. Ugh. Anyone have any other ideas?
> >>
> >>LL - NY       l.leung at juno.com
> >>
> >>
> >> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> >>
> >> > Date: Thu, 15 Aug 2002 22:38:31 -0400
> >> > To: "Paul R. Luevano" <paul at clarity.net>
> >> > From: "Doyt W. Echelberger" <Doyt at buckeye-express.com>
> >> > Subject: Re: Weird AC Behavior
> >> > Cc: quattro at audifans.com
> >> >
> >> > Paul, it does my heart good to read your story.  The A/C of my 87
> >> > 5ktq has
> >> > been doing that with increasing frequency for the past two years.
> >> > This
> >> > summer it has gotten to where it almost never blows out the dash
> >> > vents when
> >> > set on "Auto."
> >>.......................snip.............................
> >> > Check out Scott's stuff at the address below and let me know if you
> >> > can
> >> > make yours work.
> >> >
> >> > http://www.sjmautotechnik.com/AC.html#recirc
> >> >
> >
> > >Doyt at buckeye-express.com>
> >
> >> >  >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
> >> > At 08:45 PM 8/15/2002 -0400, Paul wrote wrote:
> >> > >OK, so it has been hot .............snip...............
> >> > >
> >> > >Over the last few days, I have observed a very weird occurrence.
> >> > When set to
> >> > >"Auto" the AC will stop blowing from the dash vents.  This can
> >> > happen after
> >> > >several minutes or after just a few seconds.  It seems to blow out
> >> > of the
> >> > >defrost vents, but very weakly. Here is the weird part, if I switch
> >> > it to
> >> > >"Econ", it blows out of the dash vents with a vengeance.  I can
> >> > then
> >> > >switch back
> >> > >to "Auto" and it will repeat, lasting from several seconds to
> >> > several minutes.
> >> >                       paul at clarity.net
> >
> >
> >
> >
>--