I think people experiencing this problem have very little airflow
through the floor heater ducts. A normal system is reasonably noisy
but the noise we are describing sounds like all vents are SHUT. My
vents barely make a match flicker. Joe
______________________________ Reply Separator _________________________________
Subject: Re: DML: Loud Heater
Author: <dakota-truck@buffnet.net> at internet
Date: 3/12/98 5:20 PM
This is normal. The noise is caused by less than smooth airflow
through the ducts and duct openings. The bends in the ducts are
too tight for the velocity the air is moving and the openings are
less than perfect as well. Take a look under the dash and you
will see this.
John
98 Dak CC 4X4 Sport, 5.2L, Auto, 3.92LSD, T&H Package, Power
Everything, Billet Grill, Rhino Liner, DDBC, noisy heater vents
by design...or lack there of
>
> I have 270 miles on my 98 Dakota and I noticed the heater is
way
> noisy. The sound is like the fan has nowhere to go. The sound
> seems to come from the top of the dash near the defrost vents.
> This only happens on the heat (floor) setting. It has "normal"
> noise at all of the other settings. Is this normal Dakota
> behavior or is something wrong?
>
> Could somebody check their 98? It is easy to do just turn on
the
> fan and move through the different ventalation positions. Mine
> gets quite loud on the heater setting.
>
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