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 11-16-2009, 06:17 PM
Registered User
 
Join Date: Nov 2009
Posts: 21
Idle Issues.

Ok, well my mechanic said he was working on my car for a year, and well, he wasn't. First of all i didn't have the time to do this, but now i have to make time. My car has a rough idle, mostly in part because the vacuum system to the engine needs to do done over since someone tried doing it themself without a diagram. As well, I am missing the oxygen sensor which control the fuel air through the lambda control. If i install an o2 sensor by drilling into the exhaust, welding in a new bung, install the oxygen sensor and hook it up, would this work? Where is the oxygen sensor wire located as well for the hookup. Also, where is the lambda unit, because i can find every other one but this one. so i figured once i work out these bugs, i test the timing and do the adjustments since messing with the timing now isn't the right issue to start with.
Reply With Quote
  #2  
Old 11-16-2009, 06:19 PM
Registered User
 
Join Date: Nov 2009
Posts: 21
sorry, i forgot to note I have a 1981 380sl with dual timing chain conversion.
Reply With Quote
  #3  
Old 11-16-2009, 06:48 PM
82 380SL & 96 SL500
 
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
Quote:
Originally Posted by novaguy1970 View Post
Ok, well my mechanic said he was working on my car for a year, and well, he wasn't. First of all i didn't have the time to do this, but now i have to make time. My car has a rough idle, mostly in part because the vacuum system to the engine needs to do done over since someone tried doing it themself without a diagram. As well, I am missing the oxygen sensor which control the fuel air through the lambda control. If i install an o2 sensor by drilling into the exhaust, welding in a new bung, install the oxygen sensor and hook it up, would this work? Where is the oxygen sensor wire located as well for the hookup. Also, where is the lambda unit, because i can find every other one but this one. so i figured once i work out these bugs, i test the timing and do the adjustments since messing with the timing now isn't the right issue to start with.
The Lambda unit is above the passengers footwell. The oxygen sensor is, I believe, on exhaust pipe, passenger side, after the catalytic converter. And yes, welding on the bung to install the sensor would be the correct fix.

It'd probably be worth the effort to get a cd manual for your car. Although they're a PIA, they sure beat nothing, especially when you're trying to replumb the vacuum system.

BTW, What's the story on not having an oxygen sensor and the missing bung?
Reply With Quote
  #4  
Old 11-16-2009, 07:00 PM
Registered User
 
Join Date: Nov 2009
Posts: 21
I guess the idiot before me tried to just completely do the exhaust himself and thought it would be easy to get rid of the system itself and just straight up go to the muffler from the y pipe back. Where is the hookup wire running to the unit though, this i cannot figure out for some reason, considering I've figured plenty of other things out.
Reply With Quote
  #5  
Old 11-16-2009, 07:12 PM
82 380SL & 96 SL500
 
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
I can't look right now and am not positive, but I believe it's routed through a grommeted hole in the transmission tunnel.
Reply With Quote
  #6  
Old 11-16-2009, 07:22 PM
82 380SL & 96 SL500
 
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
OK, here's a thread concerning installing an O2 sensor and running wires on a car not originally equipped with the sensor. The pics in one post are of a 560 which should be the same as your 380. Maybe this will be helpful.

http://www.benzworld.org/forums/r-c107-sl-slc-class/1472788-routing-cables-instrument-installation.html
Reply With Quote
  #7  
Old 11-16-2009, 08:11 PM
Registered User
 
Join Date: Nov 2009
Posts: 21
there's a purge valve on the charcoal canister in the engine compartment, is there anywhere where you can buy this part?
Reply With Quote
  #8  
Old 11-16-2009, 09:42 PM
82 380SL & 96 SL500
 
Join Date: Jun 2008
Location: Southern Illinois
Posts: 245
Quote:
Originally Posted by novaguy1970 View Post
there's a purge valve on the charcoal canister in the engine compartment, is there anywhere where you can buy this part?

I'm not familiar with that component, but I'm sure any of the online vendors, in addition to the dealer, would have it available. It's amazing how few parts are no longer available.

If you will sign up for the MB electronics parts catalog, free to US users, you can look up all the components for your car. It takes a bit of practice to learn how to use it, but very worthwhile. They'll ask for a credit card, but only to confirm your location.

http://epc.startekinfo.com/epc/

Great parts breakdowns and you can plug the MB part numbers you get from the epc into the search engines of the parts suppliers to aid in getting the correct parts.
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 09:24 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