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Mildew smell when cold ac on.
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#1
 
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Mildew smell when cold ac on. -
05-10-2007
, 10:13 PM
#2
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Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? |
The reason why there is a mildew smell is that there is mildew growing in
the ventilation system. There's a hole in A/C system where the water that
condenses as the air goes through the A/C system to get cold. The hole is
clugged.
You need to unclog the hole. How? Stay tuned! I don't know. But someone else
will.
Jeff
#3
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Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? |
exchanger.
--
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Igitur qui desiderat pacem, praeparet bellum.
Calling an illegal alien an "undocumented worker" is like calling
a drug dealer an "unlicensed pharmacist"
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#4
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"Go Mavs" <GoMavz (AT) GoMmavz (DOT) com> wrote... Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars. How can that be remedied? The reason why there is a mildew smell is that there is mildew growing in the ventilation system. There's a hole in A/C system where the water that condenses as the air goes through the A/C system to get cold. The hole is clugged. You need to unclog the hole. How? Stay tuned! I don't know. But someone else will. |
cleaner sprays for air conditioners that will solve this problem - one
popular one is BG Products "Frigi-Fresh" sold to mechanics, there are
other brands that are sold to the Wholesale AC & Appliance Service
trade but it's the same basic stuff.
You have to spray it into the air intake duct right at the front of
the heater box so the foam works in the right place, on the front face
of the evaporator core - the part that gets cold... So a mechanic (or
you if you're brave) will need to know where to drill a little hole in
the heater box or the air duct on the intake side, stick the extension
tube from the cleaner can in the hole and spray in a controlled dose
of the cleaner, then insert a plastic plug in the hole for next time.
Give the cleaner 15-30 minutes to soak into the crud (or follow can
directions), then go take a long drive with the AC on and the dampers
set to "Fresh/Outside Air" to start the rinsing process.
(When set to Outside the air will be more humid and create more
condensation on the core than the Recycle air that's already been
through the AC system a few times and already wrung dry.)
That cleaner should also dissolve and flush away any moldy slime
growing in the bottom of the heater box that can clog the condensate
drain hose - the spot where you're /supposed/ to see the clear
condensate water dripping from under the car when the AC is used.
--<< Bruce >>--
#5
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Go Mavs wrote: Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? Clean the drain tube as Jeff mentioned and then wash it out with a mild water and bleach solution. |
very bad idea.
You have to be Very Careful what chemicals you put in there - the
evaporator core is made of aluminum tubing and fins, and the wrong
chemical will eat a hole right through it and cause a leak. Bleach
and chlorine solutions are very reactive with aluminum.
Then you get to find out what real fun (and expense) is when you
have to change the evaporator core.
--<< Bruce >>--
#6
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Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? |
#7
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"Go Mavs" <GoM... (AT) GoMmavz (DOT) com> wrote in message news  jQ0i.9445$iY3.1846 (AT) trnddc08 (DOT) ..Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? Yeah. The reason why there is a mildew smell is that there is mildew growing in the ventilation system. There's a hole in A/C system where the water that condenses as the air goes through the A/C system to get cold. The hole is clugged. You need to unclog the hole. How? Stay tuned! I don't know. But someone else will. Jeff |
of the van was also flooding
I crawled under the car and blewthru that short black hose/drain sticking out off underbody. Lots of
dirty water got drained afterwards. No problems since then.
P.S. Naturally, I felt compelled to rinse my mouth with a decent
amount of (good brand) whiskey after the fix-up. Just for healthy
mouth and general hygene.....
kd
#8
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On May 10, 10:17 pm, "Jeff" <n... (AT) googlemail (DOT) com> wrote: "Go Mavs" <GoM... (AT) GoMmavz (DOT) com> wrote in message news jQ0i.9445$iY3.1846 (AT) trnddc08 (DOT) ..Not in the new car but an older car. I figure this is a universal problem. Its not a strong wretched smell its just an annoying smell anytime the cold ac is on. I notice this in some cars.. How can that be remedied? Yeah. The reason why there is a mildew smell is that there is mildew growing in the ventilation system. There's a hole in A/C system where the water that condenses as the air goes through the A/C system to get cold. The hole is clugged. You need to unclog the hole. How? Stay tuned! I don't know. But someone else will. Jeff it happened to my 1991 Previa on trip to Florida few yrs ago. Interior of the van was also flooding I crawled under the car and blewthru that short black hose/drain sticking out off underbody. Lots of dirty water got drained afterwards. No problems since then. P.S. Naturally, I felt compelled to rinse my mouth with a decent amount of (good brand) whiskey after the fix-up. Just for healthy mouth and general hygene..... kd |
Anyway, just for future reference, if you go to a garage, they are able to
blow out the hole with compressed air. The whiskey tastes much better.
Jeff
#9
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