The long, undersized wires and the undersized thermostat/fan switch, that
often fails, result in a significant voltage drop to the fan in the rear AC
unit, resulting in a loss of air flow.  Add a group of three 40 amp load
reduction relays in the rear AC housing and supply fused current with 10
gauge wires from the distribution post in the engine compartment and add a
good ground.  My experience is the fan will then blow as much air on medium
as it now blows on high.

If you are not sure if this is worth doing, check the voltage AT THE FAN in
the rear AC unit.

This modification will also save your expensive thermostat/fan switch from
future failure.

The fan motor could also be starting to fail.  These things have a tendency
to draw more current as they age, resulting in increased voltage drop and
reduction in air flow as described above, followed by failure of the fan
switch.  Adding the load reduction relays will postpone replacing the fan
motor for a few years.

Ed

On Wed, 29 Jul 2009 16:11:42 +0000, Richard Golen <rgolen@HOTMAIL.COM> wrote:

>
>What suggestions do you have or what solutions have you tried in order to
increase the circulation of the AC?
>
>Thanks in advance!
>
>
>Ric
>
>
>
>
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