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Old 28 May 2007, 08:39 pm
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Default moldi smell from AC

have 91 Acura legend with moldy smell coming from ac vents. is there a fix
or spray to solve problem?

Ben H

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  #2 (permalink)  
Old 28 May 2007, 09:03 pm
Michael Pardee
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Default Re: moldi smell from AC

"News" <> wrote in message
> have 91 Acura legend with moldy smell coming from ac vents. is there a
> fix
> or spray to solve problem?
> Ben H

Prepare for a battle. Once mold gets started in the A/C it can be very
tenacious. For more info, try and the links from

A popular DIY approach involves flushing the evaporator with alcohol of some
sort. Rubbing alcohol is satisfactory. The basic procedure is:
*Locate the drain tube under the car; it is usually near the firewall around
the passenger's feet. It will be a plastic tube about 1/4 inch diameter that
disappears into the passenger compartment. Whan the A/C has been operating
the end of the tube should be wet and probably dripping cold water.
*Use tape or similar to attach some squirter (large syringe, turkey baster,
etc.) filled with alcohol to the bottom of the tube, then force a few (about
2 - 6) ounces of alcohol through the tube to flush debris out, then remove
the injector device to let the alcohol drain out.
*Locate the recirculate intake of the air conditioner. It is normally under
the dash near the passenger's knees.
*Put at least 8 oz of alcohol in a spray bottle.
*Set the A/C to maximum fan and recirculate (usually called "max") . Set the
temperature full cold. Spray the alcohol into the intake - the more the

If all goes well a lot of the mold will be flushed out and much of the rest
will be killed by the alcohol. Be sure to let the car air out for a while
afterward :-)

Be sure to keep up with the cabin air filter changes. A common misconception
is that it is there primarily for the occupants, but it is primarily for the
health of the evaporator.


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