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Climate control, '89 100Q, temp sensing
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- Subject: Climate control, '89 100Q, temp sensing
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- Date: Thu, 22 May 1997 12:00:59 -0400 (EDT)
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I'm still puzzling over why my CC runs hot nearly all the time. The cable
(Bowdin?) seems to be putting the flaps through all their proper motions, as
far as I can tell, with my head (way) under the dash. The valve controlling
the flow of engine coolant seems to be working (shuts all the way when I put
system at "low"). I do *sometimes* get the flashing red light at the temp.
indicator. (I think this may be saying that the freon pressure is low (?).)
The system seems to work, briefly, if I run it through the extremes of its
ranges, then bam, full hot. Questions:
1) a recent post by Steve Buchholz (thanks!) to someone confirmed my guess
that that little grating on top/center of the dash deals with interior-temp.
sensing. My suspicion has been that whatever the device is, it's not working,
so the system defaults to full-heat. How do I check that spec. item, and
importantly, how do I get to/remove it?? Some idiot (ok, me, last nite at
10:00), while carefully (!) trying to pry at it, broke one of the small fins,
which of course fell down to Neverland. My wife reports a strange/annoying
buzzing from the dash this morning, and is not impressed.
2) does that valve that controls coolant-flow to the heater core either sit at
full open or full closed? Since it's vacumn actuated, I can't imagine it has
an intermediate point. True?
Thanks much for any help.
'88 Mazda 323 GTX