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 > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-30-2015, 07:42 PM
Registered User
 
Join Date: Jan 2009
Location: N.W. In.
Posts: 609
How do you unhook this wire on I.P.

I am taking my engine out of my 85 300 SD and this last wire to be unhooked has me a little stumped as to what it's purpose is and how to unhook it. It looked like it was just a plug with 2 wires inside it going to the I.P. I thought if I just tak 2 screws out it would unhook pull out k took the 2 small screws out and it does not seem to want to come loose. Ounce I get this unhooked I can pull engine. I do not want to cut the wires if I do not have to.
Just went out to study closer and I was able to get the wire pulled out it has 3 prongs or tabs on it that are curved I guess thats the way its supposed to be as I never had any need to take this out before and I have no idea what it does maybe someone else can shed some light on this.

Attached Thumbnails
How do you unhook this wire on I.P.-20150330_193640.jpg   How do you unhook this wire on I.P.-20150330_200318.jpg  

Last edited by yuke; 03-30-2015 at 08:04 PM. Reason: add more
Reply With Quote
  #2  
Old 03-31-2015, 04:44 PM
Registered User
 
Join Date: Jun 2004
Location: West of Ft. Worth. TX
Posts: 4,186
They are for the fuel rack position sensor, part of the EGR system. The connector is on the RH rear corner of the engine compartment. (mounted to the first firewall)

http://www.startekinfo.com/StarTek/outside/12253/program/ETM/126td83-85.pdf

Pages 108 and 207 of the electrical manual (C158)
__________________
Sam

84 300SD 350K+ miles ( Blue Belle )
Reply With Quote
  #3  
Old 04-01-2015, 10:13 PM
Registered User
 
Join Date: Jan 2009
Location: N.W. In.
Posts: 609
I unhooked it at the pump easier then at firewall just seems like more pollution crap that you don't really need.
Reply With Quote
  #4  
Old 04-01-2015, 10:36 PM
Registered User
 
Join Date: Aug 2010
Location: Sacramento, CA
Posts: 3,115
I'm not sure that side is a connector. The screws might have just been for strain relief. You might have tugged the wires out of a circuit board. Anyway, that rack position sensor is just for EGR control, so if you eliminated that (like many), it isn't needed. I put an older engine w/o that in my 1985 and runs fine, but my EGR is "temporarily off".

BTW, that temp sensor in fwd part of the block (left of photo) is also for emissions, and the earlier engine didn't have it. The aft one is for your dash gage.
Reply With Quote
  #5  
Old 04-02-2015, 01:53 AM
Registered User
 
Join Date: Jan 2009
Location: N.W. In.
Posts: 609
I won't worry too much about it then thanks all.
Reply With Quote
  #6  
Old 04-03-2015, 02:21 AM
DeliveryValve's Avatar
Chairman of my Benz
 
Join Date: Jun 2006
Location: Central California
Posts: 4,159
Quote:
Originally Posted by BillGrissom View Post
I'm not sure that side is a connector. The screws might have just been for strain relief. You might have tugged the wires out of a circuit board. Anyway, that rack position sensor is just for EGR control, so if you eliminated that (like many), it isn't needed. I put an older engine w/o that in my 1985 and runs fine, but my EGR is "temporarily off". ...
Exactly what happened. There is only one connection that can be removed and it is located on the firewall.

__________________
1983 123.133 California
- GreaseCar Veg System


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 11:23 AM.


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