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 > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 11-04-2002, 02:15 PM
s60
Guest
 
Posts: n/a
How Do I Replace the Wiring Harness?

1992 400E-101,000 odd miles I am getting codes 2,7, and 17. I have changed out spark plug wires(Beru), spark plugs(Bosch Super), ignition cap, rotor, and o2 sensor already. I have a miss during idle cold and hot. I have quadrupled checked over everyting I repaired .I also checed for leaks in vacuum hose connections. I have some black residue around the mass air flow but, if it was leaking. I think a code would pop up showing this is the problem. When, I checked the harnees now, I get more codes. So, I suspect it is the wiring harness.

Has anyone does this as a DIY? Do you have to disconnect the battery? I opened up the sleeving and sure enough the insulation is flaking like the pictures that are shown on this website.


Last edited by s60; 11-04-2002 at 02:48 PM.
Reply With Quote
  #2  
Old 11-04-2002, 08:41 PM
roas
Guest
 
Posts: n/a
Try using the "Search" button to look threw the archives.

Maybe try here to start.
Reply With Quote
  #3  
Old 11-05-2002, 01:05 AM
s60
Guest
 
Posts: n/a
Thanks for the reply but, I did check. None of them mentioned anything about disconnecting or not disconnecting the battery or much detail. The reference is for the intake manifold not, wiring harness. I saw that post also. It seems pretty lengthy and complicated. I just hope I do not have that problem as well.

The reason why I changed all the above items were first they were overdue except, the oz sensor. The code tripped so, I did it. The spark plug wires was the idea from the MB dealer themself but, decided do it myself since it took them 3 days just to diagnose the problem. So, I took it upon myself since, I did not want to wait any longer for the car not, to mention it was cheaper for me to do it myself. However, that did not resolve much except a little higher rpm during idle about, 200rpm more or less. Same intermittent miss during idle.

I cut into the wrapping around the wire harness and low and behold. It looked exactly like the pictures that have been posted. So, even if it is not due to this problem. I am going have to change it out anyways.

A footnote to all this is that lately. My door locks will pop unlock simultaniously by, itself when driving. If it is associated to the idling problem. I haven't a clue. When this happens. I press the driver's side door with my arm to lock it again. The lock from the driver's side door locks but, not the other doors. When I lock it from the outside when the car is off. The locks work fine including, the windows rolling up and the sunroof closing. No problems whatsoever. It is only the occasional unlocking of all the doors by itself. If someone knows anything. Let me know.

Last edited by s60; 11-05-2002 at 01:38 AM.
Reply With Quote
  #4  
Old 11-06-2002, 11:23 AM
Registered User
 
Join Date: Sep 2002
Location: Utah
Posts: 80
I had a bad coil on my 94 e320. I had tried to check it with an ohmmeter but somehow fooled myself--the internal connection was erratic. Independent tech found it--cost me 3 hours labor!
__________________
TomO
94 E320 Wagon, 170k, totalled in 2006
2002 BMW 525i Wagon, 75k
1991 BMW 318is (two of 'em)
Reply With Quote
  #5  
Old 11-18-2002, 04:07 PM
Registered User
 
Join Date: Oct 2001
Location: Raleigh, NC
Posts: 51
s60,

You don't have to disconnect the battery to replace the wiring harness, although I don't think it would be a bad idea to do so. Make a diagram or take some digital picutres of the existing harness before removing. As I recall, the trickiest part was where the harness goes through the "heat shield" toward the rear of the engine compartment. I took my time, had a helper and it took about 1.5 hours to complete. A good portion of this time was spent drawing the diagram of all the various connections.

RM92400E

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 12:32 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