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

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 01-18-2011, 07:31 PM
79Mercy's Avatar
Registered User
 
Join Date: Mar 2008
Location: Florida
Posts: 4,131
Loop Glowplug and Relay Upgrade

Waiting 45-50 seconds every morning for the old loop plugs was a bit excessive. On the W115 300D's the original relay will NOT work with the parallel pencil plugs(Bosch Duraterm #80035), and i did NOT want to have a rigged push button under the dash and a ford starter relay to operate them...i wanted to retain the original function of the system.

So I decided i would get a complete wire harness and relay from a turbodiesel W123 or W126 and install it in my W115 so that I could use the pencil glowplugs.

Here is how it is wired:

The turbodiesel relay:
PIN LA- glowplug light
PIN 31- ground wire
PIN 50- violet wire(starter signal wire, same color at old harness)
PIN 15- relay wire(black/blue/green wire, at original harness)
12V constant from the battery

So i ran a harness from the turbodiesel relay under the hood to the old harness at the original relay under the dash and spliced into 2 those wires(blue/green/black, violet).

Then I ran the GP light wire up the light socket, and grounded the other side of the light bulb.

Then i put in the glow plug wire harness that goes from the relay to each GP, which i pulled from a 1984 300SD at the junkyard.

Im very happy with how this updated system works, it is wired up exactly as it should be and nothing was rigged. None of the original wiring was damaged and I could return the system back to the stock loop plugs and relay system very easily.

The car starts up great when the GP light goes off(about 4 seconds). Never has the car started so quickly. I plan to make a movie tomorrow morning to compare to my old cold start video when it had loop plugs.

Here are some pictures:



__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg
Reply With Quote
 

Bookmarks


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 09:55 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, 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