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Unread 10-22-2010, 06:25 AM   #1
wjs81866
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Air Conditioning Smell

I have something strange going on with my A/C, it works fine but it stinks. I use the outside air vent all the time and it's fine but when I switch on the A/C I get this weird smell. I can't really describe it but it's only when using the A/C. When I turn it off it slowly goes away using the regular vent.

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Unread 10-22-2010, 07:55 AM   #2
BREJOLAW
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Check out the sulfur smell thread. I occasionally get the smell from the ac vent also. See if there is a smell coming from under the car or near the exhaust. It is very noticeable on the right rear wheel well.
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Unread 10-22-2010, 08:10 AM   #3
JoeSchmoe007
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Is there a chance you already have mold growing there?
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Unread 10-22-2010, 08:12 AM   #4
wjs81866
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get this, should be interesting. I called the dealer and told them about the smell. He said they can run a deorderizor throught the system. He said it takes about an hour.

I have no idea what to expect but the fact that they even have this process tell me there must be an ongoing issue.
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1) 2011 Grand Cherokee LImited
Blackberry Pearl
5.7L
Quadra Trac 2
Lux Group 2
20" tires and rims
Towing package

2) 2011 Grand Cherokee Laredo X
Blackberry Pearl
5.7L
Quadra Drive 2
Quadra Lift
Laredo X Group 25 package
Chrome Fogs and Mirrors
Off-Road Adventure II Package
P265/60R18 Michelin LTX M/S 2's
BWoody 4" Velocity Intake
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Unread 10-22-2010, 08:16 AM   #5
ecupip
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Does it still smell when you have it on recirculate?
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Unread 10-22-2010, 08:46 AM   #6
JoeSchmoe007
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Quote:
Originally Posted by wjs81866 View Post
get this, should be interesting. I called the dealer and told them about the smell. He said they can run a deorderizor throught the system. He said it takes about an hour.

I have no idea what to expect but the fact that they even have this process tell me there must be an ongoing issue.
If there is a mold growing there this will only temporarily cover the smell.

Another reason for mold growing could be that drain got clogged, however unlikely on vehicle this new.
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Unread 10-22-2010, 02:14 PM   #7
daleklotz
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I have an Overland with 200 miles on it and have noticed a strange odor when the heat first came on as opposed to the A/C. Like the original poster stated, it's hard to describe but something of a chemical smell and not antifreeze. It's as if some plastic or sealant is being heated and outgassing and it only lasts for a few minutes after it comes on.

I may try to run the cabin temp at a high setting for a while to bake it out.
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Unread 10-22-2010, 04:33 PM   #8
JoeSchmoe007
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Yeah, it could be something that needs to be "baked out" on a new vehicle. Somewhat unrelated, but when I replaced muffler on my old ZJ for some time I did feel a smell when stopped with open windows. Smell later disappeared.
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Unread 10-24-2010, 04:22 PM   #9
wjs81866
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I think it might be the A/C filter (cabin filter) there is one but I can't find anything to tell me where its located?
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1) 2011 Grand Cherokee LImited
Blackberry Pearl
5.7L
Quadra Trac 2
Lux Group 2
20" tires and rims
Towing package

2) 2011 Grand Cherokee Laredo X
Blackberry Pearl
5.7L
Quadra Drive 2
Quadra Lift
Laredo X Group 25 package
Chrome Fogs and Mirrors
Off-Road Adventure II Package
P265/60R18 Michelin LTX M/S 2's
BWoody 4" Velocity Intake
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Unread 10-25-2010, 04:13 AM   #10
DLUNDER
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ac odor

better make sure it's draing ,start the vehicle turn on ac full blast and look underneath the drivers seat at the same time feel drivers side rug for dampness,the drain may not be hooked up,happened to me didn't notice it until 400 miles
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Unread 10-25-2010, 07:58 AM   #11
daleklotz
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Mine is definitely not the A/C filter or drain line. I checked that right away and the smell was not the usual sour odor of the bacteria having a party in the culture medium.

The cabin filters have been accessed via the firewall on previous generation WK's. I usually pulled a weather trim strip off (that used a friction attachment) and that revealed the access to the compartment where the filter resides. It's always been on the passenger side.
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Unread 10-25-2010, 05:32 PM   #12
Snipe315
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If this smell is coming from the exhaust, it should have an odor similar to rotten eggs or possibly ammonia. It should also be more noticable at the rear of the vehicle (for obvious reasons).

If it is from mold/mildew somewhere inside the A/C system, it should smell like that (mold or mildew).
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Unread 10-26-2010, 01:28 AM   #13
myjeeplovesmud
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Quote:
Originally Posted by JoeSchmoe007 View Post
Yeah, it could be something that needs to be "baked out" on a new vehicle. Somewhat unrelated, but when I replaced muffler on my old ZJ for some time I did feel a smell when stopped with open windows. Smell later disappeared.
can you explain how you "felt a smell" for us please
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Unread 10-26-2010, 08:05 PM   #14
alex725
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My liberty had a smell when I bought it back in july. Running the air on full blast driving from NJ to NC is was very noticable, but by the time I made the return trip the smell had worn out. My guess was too much frion (sp?) by the time I made it to maryland it was wet around the vents and the air was coming out white.
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Unread 10-26-2010, 08:30 PM   #15
JoeSchmoe007
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Quote:
Originally Posted by myjeeplovesmud View Post
can you explain how you "felt a smell" for us please
English is not my first language - not sure of the right way to say it.
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