Re: A/C vents type 44

[Wallace White <wallace@remdesign.com>]

The broken return spring Phil refers to is for the fresh air/recirc flap
below the glove box. The spring often breaks or comes off, leaving the
door in the recirc position, fogging the car up.

The spring won't affect the distribution flaps, but there's a vacuum
connection nearby that may be a problem. Check the vacuum piston for
that recirc flap. It may have broken off of its plastic bracket and come
disconnected from its vacuum hose. There is a beefed up, metal bracket
replacement; in the meantime, you can plug up that vacuum hose.

If that hose is disconnected, however, it would only cause problems when
it's getting vacuum--and that's only when the CC is working really hard
to cool the car. The problem is more likely to lie in the A/C
programmer. One of the vacuum solenoids on mine needed its wires
resoldered. 

- Wallace
  '87 5kcstq 155k

Phil and Judy Rose wrote:
> 
> Vacuum, vacuum, vacuum.
> 
> At least in the case of my '89 100, the same A/C symptom was caused by a
> disconnected vacuum hose (lurking beneath the large black plenum cover). Of
> course a loss of vacuum could occur at other points along the line, which I
> guess eventually ends at the (flap) controller, down below the dash. Isn't
> this also where a a broken/loose return spring can misdirect the airflow
> (or maybe that's related to a different symptom?)
> 
> >Date: Sat, 19 Jun 1999 21:12:22 -0600
> >From: "Mark Rutherford" <mark@afnetinc.com>
> >Subject: A/C vents type 44
> >
> >I know that this has been covered a million times, but what goes wrong that
> >prevents air from coming out of the middle vents on the dash.  I have tons
> >of mechanical experience but thought I would ask before looking at it
> >tomorrow.  Could someone point me in the right direction.
> >
> >Thanks
> >
> >mark@afnetinc.com