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 11-13-2003, 02:14 AM
Registered User
 
Join Date: Oct 2002
Posts: 463
a/c makes hissing noise, doesnt blow cold

a couple days earlier my a/c worked fine, then it wasnt cold at all anymore and there was a hissing noise coming from the center vent.

the blower works and so does the heater.

could the hissing be a vacuum leak? how would a vacuum leak in the a/c affect its performance?
could this just mean im out of refridgerant?

thanks
__________________
1991 300 D 2.5 Turbo, 220k
also in the family:
1981 240 D 185k
1991 350 SD 185k
2006 S 500
2005 SLK 350
Reply With Quote
  #2  
Old 11-13-2003, 09:20 AM
Registered User
 
Join Date: Feb 2002
Location: Belgium,Europ
Posts: 196
Grdenko,

Look at the 3rd tread of this forum : your answer is just right there!
Couldn't be repeated enough!

Danny
Reply With Quote
  #3  
Old 11-14-2003, 02:39 AM
Registered User
 
Join Date: Oct 2002
Posts: 463
i did, several times. nothing about a hissing a/c.
__________________
1991 300 D 2.5 Turbo, 220k
also in the family:
1981 240 D 185k
1991 350 SD 185k
2006 S 500
2005 SLK 350
Reply With Quote
  #4  
Old 11-14-2003, 03:31 PM
aldedmon's Avatar
Senior Member
 
Join Date: Mar 2001
Location: Houston
Posts: 809
Your A/C has leaked out its freon. The hissing sound comes when the freonis below a certain level. The fact that it is not cooling is a tell tale sign that the freon is low. Unfortunately you have R12....If you had 134a, it'd be no big deal, just go to target/walmart get a few cans and charge it back up. As it stands, you'll need to find a shop, get the leak scoped , fixed, and then recharged. If its the dreaded evaporator core, you may as well just trash the car and get another. A 91 300E ain't worth the $2500 MINIMUM that it'll take to repair the A/C. Heck it's probably not worth(Blue Book) the $250 it'll cost to get the leak diagnosed........
__________________
Regards,

Albert
aldedmon@yahoo.com
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 06:57 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