The heater fan is a centrifugal device that can only move air in one
direction. If the fan was turning backwards it would still force air in the
same direction although perhaps not as efficiently. In order to reverse flow
direction you would have to reverse the inlet and outlet hoses. Check that
the hose coming back from the grille is mounted to the center of the scroll
and the hose to the heater is mounted to the outlet on the edge of the
scroll.
Bill Lawrence
>From: john lakie <doelakie@yahoo.com>
>Reply-To: john lakie <doelakie@yahoo.com>
>To: healeys@autox.team.net
>Subject: heater fan sucks
>Date: Tue, 13 Sep 2005 19:00:20 -0700 (PDT)
>
>It's not very often that I've had to turn on the
>heater fan on my BJ8 but it's proven to be pretty
>ineffetive whenever the need arises. As I make more
>and more use of the car it's becoming a problem when
>the windshield "fogs" up reducing my visibility. At
>first I just assumed that the duct work to the vents
>on the dash were not correctly fitted or perhaps the
>vents were partially plugged, but all seemed to be in
>order. I could here the fan run, but was unable to
>detect any noticeable airflow.
>Eventually, I came to discover that whan I put my hand
>over the intake duct (behind the front grill), air was
>actually being blown out, not being drawn in. Would
>this be something as simple as reversing the
>electrical connections to the fan, as this car was
>converted over to negative ground years ago; or has
>the fan motor been installed backwards???
>thanks in advance,
>John Lakie
>65 BJ8
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