Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-20-2002, 05:26 PM
Registered User
 
Join Date: Mar 2002
Posts: 11
Unhappy Air Conditioner Smell

A bad smell started coming from my air conditioner and soon after the 'check engine' light came on. I brought the car to the local MB dealer and they said the light was indicating the purge valve was bad. I had them replace the purge valve but the stink remains from the air conditioner. Any clues or suggestions? I am holding my breath...

LB
Reply With Quote
  #2  
Old 07-20-2002, 08:14 PM
Registered User
 
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
Because evaporators tend to get wet from condensation, bacteria will grow on them. The only way to prevent this is to run turn the air con off a few minutes before you shut the car down and run outside air through the evaporator. To get rid of the smell, Turn your fan to circulate the air in the car....no A/C, get some lysol disinfectant..UNSCENTED!!!! and spray it into the air induction outside where the air is pulled in the car. This should kill all of the bacteria.
__________________
George Carstens
Reply With Quote
  #3  
Old 07-20-2002, 08:37 PM
MBDiesel
Guest
 
Posts: n/a
lbensky, Is the car you're talking about gas or diesel? The purge valve is probably fuel evap system related. Is the smell fuel or does it have a musty odor. Is this car 1996 or newer?
Reply With Quote
  #4  
Old 07-20-2002, 08:57 PM
Holson Adi's Avatar
Registered User
 
Join Date: Jul 2001
Location: Boston, MA
Posts: 2,561
Quote:
Originally posted by Maddog
Because evaporators tend to get wet from condensation, bacteria will grow on them. The only way to prevent this is to run turn the air con off a few minutes before you shut the car down and run outside air through the evaporator. To get rid of the smell, Turn your fan to circulate the air in the car....no A/C, get some lysol disinfectant..UNSCENTED!!!! and spray it into the air induction outside where the air is pulled in the car. This should kill all of the bacteria.
That sounds like a good idea. Where is the fresh air vent?
Are they the two grilles behind the hood on the body?
__________________
2008 BMW 335i Coupe
Reply With Quote
  #5  
Old 07-20-2002, 09:19 PM
Registered User
 
Join Date: Mar 2002
Posts: 11
Smile Lysol to kill the germs...

Th vehicle is a 1994 E320 with 82k. I will try the Lysol disenfectant but I might get the summer fresh scent since I like smelly (good) stuff. Thanks for the tip...
Reply With Quote
  #6  
Old 07-20-2002, 10:13 PM
Registered User
 
Join Date: Nov 2001
Location: Atlanta, GA
Posts: 553
I don't know your car specifically but if you have those vents between your windshield and your hood...those are probably them. Just turn the fan on high inside the car and see if you can either hear or feel the air going in. But if you have those vents, thats where it is.
__________________
George Carstens
Reply With Quote
  #7  
Old 07-21-2002, 10:36 AM
LarryBible
Guest
 
Posts: n/a
There is a standard spray that is used by air conditioner people to get rid of the smell. I have never used it, so for all I know, it might be lysol in a differently marked can.

I saw some of this stuff on the shelf next to the freon at Pep Boys.

Good luck,
Reply With Quote
  #8  
Old 07-21-2002, 10:48 AM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,777
The lysol trick will kill what is there, but it will return. The solution is to clean out the 2 drains from under the car. Rubber flaps on each side
of/above the trans.
The evaporator water is staying in the car.

It is also advisable to replace the air intake filters under the
hood [ there are 2 on your car]. Blocked filters don't let enough
air into the housing to evaporate the moisture when the car has been turned off and left standing...
Reply With Quote
  #9  
Old 07-21-2002, 11:05 AM
JCE's Avatar
JCE JCE is offline
Down to the Wear Bars
 
Join Date: May 1999
Location: So Kalifornia
Posts: 2,189
Arthur:

I have done the lysol/drain clean tricks before on my Acura, and it worked pretty well. But this is my first car with an air intake dust/odor filter. If/when I develop the same problem on this car, do you think the filters will interfere with the Lysol spray? Would it be worthwile to remove the filters, spray with Lysol, THEN add new filters? Thanks for any insight.
__________________
John

2003 Firemist Red/grey leather SL 500
2015 Palladium Silver/black mbtex GLK 350
1987 Smoke Silver/burgundy mbtex 300E Sportline (SOLD)

Click to see 87 300E
Reply With Quote
  #10  
Old 07-21-2002, 11:59 AM
Registered User
 
Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,777
John
Absolutely.

Unfortunately, on the car in question. they are a B---h to change...
Reply With Quote
  #11  
Old 07-21-2002, 12:26 PM
Moderator
 
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
I can't stand odors, probably comes from an alergenic, asthmatic, youth.

No little pine trees for me. Florida has to be about as bad as it gets for mildew growth on evaporators and in the last two years I have had it on both my wifes ML and my 540i. Luckily I hired a tech from Toyota about two years ago and he turned me on to the best stuff. It is hooked to the drain under the car and a whole aerosole can is exhausted. It creats a foam that permeats the entire evaporator case. After about 20 minutes it condenses back to a liquid that flows back out the drains. The kit also comes with a spray to put into the air intake but it smells so I didn't use it.

After first doing it to my wifes ML, I was really worried because the car smelled of amonia when I drove it home. I forgot about it for a week and then asked her if it still smelled of amonia. She said she never smelled it. I have driven the car numerous times since and absolutely no smells other than the new car smell.

We have used it in the shop a number of times now and I have one word of warning. Most older MBs have A/C drain tubes that are made of a foam rubber tube with 7/16 in wall thickness covered with a thin water tight film. The foam often is in terrible shape. The method of introduction of the product requires a tight seal to the bottom of the evaporator case. On 300Es that we have done we have had to replace the drain tubes after pulling the wimpy ones and hooking the product right to the evap hard tubes (inside the car).
__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
Reply With Quote
  #12  
Old 07-30-2002, 03:42 PM
coallaw
Guest
 
Posts: n/a
air smell

similar problem. Dealer sprayed something in to kill bacteria - but it smelled worse than the bacteria (like the little smelly tablets they put in toilets). When that finally stopped smelling, the dealer suggested spraying lysol in the intakes. or you can use a product called "Refrigefresh". I went with the lysol as you can get it in any smell you want. Best I found was the lysol smell that is supposed to smell like freshly ironed clothes (rather than pinetrees, etc.). It worked great. Sprayed in a few times over a day or so and after that smell cleared out the original bacteria smell is gone.
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 06:09 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page