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 07-22-2011, 09:06 AM
Registered User
 
Join Date: Jul 2011
Posts: 37
'84 380SL - Something's Missing...

Good Morning all, longtime lurker and first post of what will likely be many posts. I drove my "new" vehicle home yesterday in the 100 degree heat and was glad to see she made it the 50 highway miles without a problem. The car definitely needs some work but looks really nice and has what feels to be a strong drivetrain. With only 88K miles on the clock I'm optimistic.

Admittedly, I did't inspect the car as thoroughly as I should have before I purchased it and as I looked it over last night in my driveway I noticed something missing. On the PS fenderwell, right near the firewall, is a black,circular plastic bracket about 3 inches in diameter that obviously had something attached to it at some point. There is broken plastic left from whatever used to be there. Can anyone tell me what belongs there? If necessary I will post some pics.

Thanks in advance.

Matt.
Reply With Quote
  #2  
Old 07-22-2011, 09:35 AM
Admiral-Third World Fleet
 
Join Date: Feb 2002
Location: Central FL
Posts: 3,068
I think you may be missing the monovalve (?). Seems like that's where it is on my '85.

You might want to add your location (still Brooklyn) and car to your sig.

You need to look into your timing chain and front subframe to see if you have any serious issues ahead.
__________________
80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
Reply With Quote
  #3  
Old 07-22-2011, 09:47 AM
Registered User
 
Join Date: Jul 2011
Posts: 37
Thanks for the reply. The monovalve is there, right on or against the firewall. This mystery item would have been directly i/f/o it.
__________________
1984 380 SL (Helga)
Reply With Quote
  #4  
Old 07-22-2011, 03:34 PM
ericdee's Avatar
Registered User
 
Join Date: May 2001
Location: Los Angeles, CA
Posts: 497
Can we see some pics?
__________________
Eric, 1983 500 SL
Reply With Quote
  #5  
Old 07-22-2011, 03:43 PM
Registered User
 
Join Date: May 2008
Location: Ipswich, MA and Phoenix, AZ
Posts: 92
My '84 has the monovalve mounted on the firewall, then a 12"-15" gap followed by the radiator overflow tank, and immediatly in front of it the windshield washer fluid tank. Nothing is mounted on the side in between the overflow tank and the monovalve. Does this help?
Ned
Reply With Quote
  #6  
Old 07-22-2011, 10:13 PM
Registered User
 
Join Date: Jul 2011
Posts: 37
Here's what i'm talking about.

As long as I have eyes on it, can anyone confirm that the mono valve shouldn't have those two hose clamps on it? It's also hanging free so someone messed with it at some point. Lotta skeletons shakin' loose here!
Attached Thumbnails
'84 380SL - Something's Missing...-dsc_0035.jpg  
__________________
1984 380 SL (Helga)
Reply With Quote
  #7  
Old 07-23-2011, 06:37 AM
Admiral-Third World Fleet
 
Join Date: Feb 2002
Location: Central FL
Posts: 3,068
Nope, that's not your monovalve, that's your aux water pump. Your monovalve looks to be there hidden behind the left fork of the washer hose. That looks right to me,although ours doesn't droop like that. Try some Viagra?

If you are talking about the bracket that is sitting flat below the aux water pump, that's not GI. Looks to me like a leftover alarm system horn. Get rid of it, if you wish.
__________________
80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)
Reply With Quote
  #8  
Old 07-23-2011, 08:47 AM
Registered User
 
Join Date: Jul 2011
Posts: 37
Great, thanks. So Seafoam for the fuel system and Viagra for Vacuum. Got it.
__________________
1984 380 SL (Helga)
Reply With Quote
  #9  
Old 07-23-2011, 10:07 AM
Registered User
 
Join Date: Mar 2003
Location: Milwaukee Wisconsin
Posts: 1,150
That clamp is diffinitly from an alarm horn base.....used to have one.
__________________
Resistance is Futile.
Reply With Quote
  #10  
Old 07-23-2011, 12:32 PM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,133
looks to me like the ACCII system has been bypassed? removed?
__________________
Ron
2011 Porsche Cayman - Bond,James Bond
99 E320 THE Queen Mary
62 220b - Dolly - Finally my Finny!
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
07 Lexus RX 350 - Lexi
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
Reply With Quote
  #11  
Old 07-23-2011, 04:27 PM
Registered User
 
Join Date: Jul 2011
Posts: 37
Panda,
Funny you should bring that up. I just finished removing the blower to r&r it since it was making a lot of noise. I found a lot of debris and some rust in the area surrounding the blower. It's obvious that someone has messed with the climate control system because the controls in the dash are not seated correctly. When you push a button the whole assembly pushes in. Also, when cruising around there is a whole lot of hot air blowing on my feet so it seems maybe the vents aren't closed. I'm going to search for a thread on where to begin with this but any advice would be welcome. Thanks.

Matt.
__________________
1984 380 SL (Helga)
Reply With Quote
  #12  
Old 07-23-2011, 05:47 PM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,133
here you go Matt, all you will want to know

http://www.imperialclub.com/Repair/Lit/Master/281/cover.htm
__________________
Ron
2011 Porsche Cayman - Bond,James Bond
99 E320 THE Queen Mary
62 220b - Dolly - Finally my Finny!
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
07 Lexus RX 350 - Lexi
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
Reply With Quote
  #13  
Old 07-23-2011, 07:25 PM
Registered User
 
Join Date: Jul 2011
Posts: 37
Thanks, Ron but mine is actually an ACC3 system with the horizontal buttons and the adjuster on the left. My research to this point is leading me to believe that my problem is a bad monovalve causing a constant heat situation. Probably one of my next things to fix since having the heat on when the OAT is 99F is not much fun.

Matt.
__________________
1984 380 SL (Helga)
Reply With Quote
  #14  
Old 07-23-2011, 09:39 PM
meltedpanda's Avatar
Certified Benzaholic
 
Join Date: Mar 2003
Location: Central Ky
Posts: 6,133
OK great, my 82 had an ACCII, so I assumed -haha. well good luck, A stuck or sick monovalve is all hot or all cold, so you are probably correct, easy RR
__________________
Ron
2011 Porsche Cayman - Bond,James Bond
99 E320 THE Queen Mary
62 220b - Dolly - Finally my Finny!
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
07 Lexus RX 350 - Lexi
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
Reply With Quote
  #15  
Old 07-27-2011, 11:28 AM
Registered User
 
Join Date: Mar 2006
Posts: 545
I have an 82 but the climate control system is identical

If you want me to take some high res pictures of the monovalve area give me your personal email via a PM on this board, and I will email some pics to you.
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 05:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page