"94 Legacy A/C intermittant

[coolc]

Sometimes the A/C is fine and sometimes the A/C blows heat, even in
the "Vent" setting. Gas pressures in the line are OK. No pattern.
Where are the sensors and electrical parts that could be the issue?

 

[Carl 1 Lucky Texan]

Does it get hot when idling/stationary, then cool down when you're
moving and continue moving? If so, probably the secondary radiator fan
is not coming on.

Carl

 

[coolc]

Does it get hot when idling/stationary, then cool down when
you're
moving and continue moving? If so, probably the secondary
radiator fan
is not coming on.

Carl

No. Has nothing TO DO W/ WHETHER THE CAR IS MOVING, HOT, COLD AT
START-UP OR AFTER CAR HAS BEEN ON THE ROAD. (Sorry - da*m caps lock).
No pattern to it. Any insight into the diode in the wiring harness
(FSM diagram) about this being the problem would be good.

 

[coldcut414]

Sounds like you have the same problem I had with my 1991 Legacy. Afte
thinking I was losing my mind, and after several trips to th
dealership. They discovered that the problem was with a part tha
controls the humidity, it was defective. Sorry I cant remember the nam
of the part, but a mechanic should know.
Robi