The heater output on my wife's 2000 Caravan 3.8L is somewhat
intermittent. The temperature gauge reads in the expected range but
the air coming out the vents is sometimes cool. If you wait a few
minutes or soemtimes if you fiddle with the temperature control hotter
air will again resume coming out the vents. I'm guessing there must be
some mixer control that is acting up and am looking for suggestions on
where I need to look for problems or other suggestions as to what the
problem might be.
Thanks for your ideas.