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-Benz Forum > Mercedes-Benz Tech Information and Support > Mercedes-Benz SL Discussion Forum

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 12-04-2001, 02:31 PM
Registered User
 
Join Date: Nov 2001
Posts: 28
Middle vents not working on 560SL

I have a 1987 560SL and the middle vents do not work. After looking a little further, it appears that I am not getting any, or very little, vacuum at all to operate the valves. When I change from defrost to floor air I hear something going on under the dash and the amount of air decreases going to the windshield. Does anyone know what I can do?

__________________
2001 ML320
1987 560SL
1970 280SE
1965 230SL
Reply With Quote
  #2  
Old 12-04-2001, 03:38 PM
Gilly's Avatar
Registered User
 
Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
I believe this is all temperature dependent, check the operation instructions in the owners manual. I believe the center vents only provide cooled air, so if it is fairly warm where you are, try dialing down into max cool and wait. It may take several minutes. Once the climate control has figured out "Hey, I need to cool off the interior" it will send cooled air through the center vents. If it is already cool where you are, this may not happen, although Max Cool should send at least a little cold air through.
Gilly
Reply With Quote
  #3  
Old 12-04-2001, 04:59 PM
Registered User
 
Join Date: Nov 2001
Posts: 28
How quick should the fresh air vents close after the button is pushed?
__________________
2001 ML320
1987 560SL
1970 280SE
1965 230SL
Reply With Quote
  #4  
Old 12-04-2001, 07:49 PM
Gilly's Avatar
Registered User
 
Join Date: Mar 2001
Location: Evansville WI
Posts: 9,616
OldBenz:
Nothing happens "fast" with this system, except possibly defrost.
I am unsure though what exactly you mean. There are many buttons, which button do you mean?
I also don't see how the question relates to your observation of air from the center vents. The system will introduce cool air as needed, as called upon by the control unit. Whether or not the fresh air flap, which introduces outside air, or recirc flap, which recirculates the interior air, is opened or closed is pretty academic.
Gilly
Reply With Quote
  #5  
Old 12-04-2001, 09:15 PM
Registered User
 
Join Date: Nov 2001
Posts: 28
The direction I was heading was if when the recirc button is pushed, how quick can I expect the fresh air flaps to close. I am trying to determine if the entire control unit is even supplying a vacuum. Nonetheless, I will put your suggestions to the test tomorrow as I am out of town today. Thanks for the response.
__________________
2001 ML320
1987 560SL
1970 280SE
1965 230SL
Reply With Quote
  #6  
Old 12-05-2001, 07:27 PM
86560SL
Guest
 
Posts: n/a
MIDDLE VENTS and NOISE

I have the same problem on my 86 SL. Also, the blower motor makes this annoying noise when it's on. I've been told that I may have a vacuum problem regarding the vents. I believe I might need a new blower motor. I took the current one out and cleaned and oiled it. However, it is still making noises. Any suggestions for remedies?
Reply With Quote
  #7  
Old 12-06-2001, 01:17 PM
Registered User
 
Join Date: Nov 2001
Posts: 28
I had to replace the blower motor on mine about 8 months ago. The bearings were completely shot which allowed it to hit the shroud. I bought one from a local scrap yard for 75 bucks and it works great. Just remember to check for play if and when you buy used.

__________________
2001 ML320
1987 560SL
1970 280SE
1965 230SL
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
im curious. In a 190e should the middle vents always blow cold air mr benz Tech Help 13 11-08-2021 06:42 PM
W123 Turn Signal stopped working dave1shere Diesel Discussion 17 04-26-2021 01:05 PM
560sl odometer and speedometer not working robaincltnc Tech Help 6 04-18-2008 08:47 AM
Center vents, heat vents - - no air tomm9298 Diesel Discussion 3 09-25-2004 06:20 PM
89 300E, A/C blows cold in middle vents and hot on both side vents lotlizard Tech Help 2 09-17-2001 07:09 PM



All times are GMT -4. The time now is 05:57 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page