| DISCUSSION: The vehicles listed above offer a separate rotary knob for independent
control of the Fresh(outside air) / "Recirc" (inside air) function. The intent
of the independent control of Recirc is:
- To temporarily allow customers to eliminate dust or outside odors.
- To get maximum cool down performance by going into "Recirc" without having to
change modes or temperature settings.
Prior to January 1995, the A/C evaporator had a chromate coating for long term corrosion
protection and a silicate coating to insure that condensate would run off the fins instead
of getting in the air stream and coming out the panel outlets. Due to new regulations, a
new non-chromate coating process was implemented in January 1995.
Under some ambient conditions the new coating may cause the air passing over the
evaporator to develop a temporary musty odor. When operated in the "Recirc" mode
the odor is more noticeable. Also, operating for extended periods in "Recirc"
with the A/C off may create and intensify the musty odor.
Running in "Recirc" for long periods of time in very cold weather may cause
moisture from snow tracked into the car and moisture from the occupants breath to condense
on the cold glass and in some cases the defroster may not clear all the glass. Even with
the A/C running on mild wet days and running in "Recirc", some fog may remain on
areas of the glass.
NOTE: CHANGES IN THE 1997 NEON WILL NOT ALLOW THE FRESH/RECIRC DOOR TO STAY IN RECIRC WHEN
THE DEFROST MODE IS SELECTED.
It is important that the instructions given in the owners manual that recommend that
the"Recirc" mode be used for no more than 30 minutes at a time be followed.
Encourage customers to operate in Fresh as the normal condition and go to Recirc only for
the temporary conditions given above. |