Hello everyone,

I dont think I ever recall seeing any pics of what was inside a glow plug relay box so as I've decided to snap a few pics for anyone who's interested in taking a look:

This box is part number: 001 545 98 32
It is for a 5-cyl 617






This one came out of my green SD as part of a diagnostic and was replaced with a known working one from my gold SD.

After fixing the issue with the green SD, I've tried to reinstall this one into my gold SD.

It appears to be dead. No cluster light. No voltage at glow plugs.

Correction: It works, just needed some cleaning on the terminals.

Attached Thumbnails

       

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Thanks.

__________________
84 300D, 82 Volvo 244Gl Diesel

I took one apart a couple months ago that was malfunctioning (staying on)....nothing looked wrong physically, but I did not waste much time on it as I had a good used one on the shelf.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

What I love most about my car is the fact that the radio is probably the most advanced electronic gadget in the car.

I love how you can follow solder paths on the board. Try doing that with a modern computer!

__________________
-Typos courtesy of my mobile phone.

An emery board cut down the center to make it much thinner is a great tool to clean those contacts with too. The thinner the better as long as the contacts dont tear it.

When your thru sanding the contacts a quick wipe with rubbing alcohol is a good thing to do to insure everything is smooth and clean.

__________________
1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."

Back when I used to run a Video Game arcade, we'd use a dollar bill to clean contacts for joysticks and buttons. Very low abrasion and high utility as far as cleaning electrical contacts. Might be useful for the final buff.

__________________
Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)

Also useful for cleaning valves on musical instruments, rolling papers are good too.

with the advancements in electronics today, the new relays should have
smaller components and/or less of them to do the same job.

the printed circuit board, looks like some we used when I worked for
Sylvania back in 68.

Charlie

__________________
there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

The biggest advancement nowadays would be to get rid of those in-line current sensing coils, and have Hall-effect type current sensors just mounted next to the high-amp lines. And, there would be one per glow plug, none of this "first one" or "last one" or "something in between" guessing game.

__________________
Cheers!
Scott McPhee

1987 300D

The guessing game is a result, in part, of the same component being used in both four and five cylinder engines.

I've managed to grab spare glow-relays for my '82 240D and '84 300TD at my Pick-N-Pull. At least on my cars, they aren't identical. Haven't tested either spare but they were cheap enough. I suppose I could rig a push-button switch to do the job - so long as I didn't heat the plugs long enough to fry them. Anyone know the price of a new glow-relay?

Happy Motoring, Mark

__________________
DrDKW

0015459832 (300TD)
0015459732 (240D)

They're about $100 for each of them...

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

Sounds reasonable, compared to some prices I've recently heard for W123 parts - like $800 for a heater-blower, or $1200 for an SLS-pump!

Happy Motoring, Mark

__________________
DrDKW

For that price, looks like its time to build my own.. As long as the contacts are still good, replacing the electronics is a breeze...

__________________
Ich liebe meine Autos!

1991 Mercedes-Benz 560SEL | Megasquirt MS3-Pro | 722.6 transmission w/ AMG paddles | Feind Motorsports Sway Bar | Stinger VIP Radar | AntiLaser Priority | PLX Wideband O2 | 150A Alternator | Cat Delete
1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday...
1981 Mercedes-Benz 300SD | Rear ended, retired in garage.
2009 Yamaha AR230HO | Das Boot

Excessive speeding? It ain't excessive till I redline!

After two earlier unsuccessfull attempts, this evening I finally found a Hella pre-glow time-relay listed under 'body-electrical' on Fastlane - for $193.50.
It supercedes the earlier designs and replaces both W123 240 and 300 diesel glowplug relays.
This upgrade part operates the glowplugs for up to 3 minutes after engine startup and appears to require replacement glowplugs.

Happy Motoring, Mark

__________________
DrDKW