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 01-26-2007, 02:32 PM
steve311's Avatar
Registered User
 
Join Date: Jan 2007
Location: Columbia, SC
Posts: 4
M104 Throttle actuator/harness REPAIR

Hello to everyone!
Iím new to the forum and likely going to be buying a clean one owner 94 E320 wagon w/ 112k miles this weekend, provided it checks out okay. Iíve been reading everyoneís posts and articles like a madman for 3 days and feel as though itís a pretty solid car for the moneyÖ.save for the harness and actuator replacement costs.

Then I started thinking, what if they can be rebuilt?

Now Iím not claiming to be an electrical engineer or some sort of guru, but Iím an engineer and an experienced do it yourselfer. Is that a word? Iíve worked on Subaru, Saab, BMW, Audi turbos, VWís and a little on older Porsches but this will be my first Mercedes (again, assuming nothing scares me off Saturday).

Iím very curious as to what causes the throttle actuator to fail and whether or not it can be repaired. The harness failure is obvious, but it doesnít look like an overly complicated harness, so I wonder if that can be rebuilt with any success as well. I figure the price of a new one is all the motivation I need to dig in and see if a less expensive repair could exist. Of course I would document everything and report my findings to the list. If there is a fix, everyone else could benefit by referring to the procedure/pictures I document. Like I said, just want to try and find a solution to a costly replacement part.

If this has been done before, please stop me here, but if not... and anyone who has replaced their harness or actuator still has them lying around and would like to donate to the cause, Iíll gladly pay for the shipping and packaging.

I figure a donation to the cause of old Mercedes rehabilitation sure beats throwing it in the trash.

This may just be ďpie in the skyĒ, but I figure itís worth a shot.

Any input concerning the rehab project idea or my purchase would be welcome.

Thanks,
Steve Hauptmann
Columbia SC

Reply With Quote
  #2  
Old 01-26-2007, 02:49 PM
Registered User
 
Join Date: Aug 2006
Location: Houston, TX
Posts: 450
Visit www.v12uberalles.com for an interesting article on rebuilding the wiring harness for the throttle actuator on a v12 motor. The M120 (if I've got my model #'s right) V12 motor is just 2 M104's "joined" together, so there may be some similarities.

The guy that created that site is a real detail-oriented individual determined to fix things the right way, and fix them only once.

Maybe there will be something you can glean from his space.
Reply With Quote
  #3  
Old 01-27-2007, 12:51 PM
JimF's Avatar
'94 S500: only 793 sold!
 
Join Date: Mar 2001
Location: San Diego, CA
Posts: 1,933
Quote:
Originally Posted by steve311 View Post
Hello to everyone!
. . buying a clean one owner 94 E320 wagon w/ 112k miles this weekend, provided it checks out okay. . . .feel as though itís a pretty solid car for the moneyÖ.save for the harness and actuator replacement costs.

. . what if they can be rebuilt? Any input concerning the rehab project idea or my purchase would be welcome.
Check out MENU#24 for qualified sources for the re-build of an ETA. You, being an engineer, should be able to do a re-build yourself for the 'wiring-harness' since it's just a lot of hard work. Mating of the various connectors will be the biggest problem.

The ETA is another story since it difficult to test it after being rebuilt. That might be best to have done.
__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page
Reply With Quote
  #4  
Old 01-27-2007, 09:49 PM
Registered User
 
Join Date: Jan 2005
Location: St. Louis Missouri
Posts: 473
I rewired two of these--one successful, one not. Hardest part is dissecting the connector so it can be used again. See attached pictures.
Attached Thumbnails
M104 Throttle actuator/harness REPAIR-pic00005.jpg   M104 Throttle actuator/harness REPAIR-pic00008.jpg  

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 01:52 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, 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