Mercedes-Benz Forum banner

1 - 13 of 13 Posts

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #1 (Edited)
Greetings, all

I have a 1995 OM606910 engine from a W124 that I'm trying to get running.

I have several questions about this engine, which I will ask in this thread. Please bear with me.

1) Does the E300 Diesel (non-turbo) have an ECU? Or does it only use the idle regulation relay and EGR relay? If it has an engine ECU, is it the same one as the E300 Turbodiesel (0125454532)?

2) Does someone here have the electrical diagram for the OM606-powered W124? The "full" ETM that I can find seems to exclude the OM606.

Thanks
 

·
Registered
'95 E300 DIESEL, '91 600SEL, '92 600SEL
Joined
·
17,375 Posts
Yes, the OM960.910 does have a ECU. It is called EDS (electronic diesel system), although it is very rudimentary and basically controls idle characteristics and idle speed.

It is not the same ECU as the turbo unit.

Did you not get a ECU when you bought that crate engine??? If not, I'd contact the seller. Probably your best best on getting the proper one.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #3 (Edited)
Well, colour me confused...

The chassis-side engine harness for a W124 E300 Diesel (124 440 3232) that I bought off of eBay has space for four relay-like things, and comes complete with two vacuum actuators, but I see nothing resembling the ECU connector nor any evidence of the harness having been tampered with. Yet in this chapter of the MM there is specific mention of control unit N37/3 with two part numbers, 061 545 9532 (which doesn't exist) and 016 545 9132 (which is the A/C controller from a Vito minibus?).

There is no mention of a diesel engine control unit in the parts list for 1992-1995, yet there is a diesel ECU in the parts list for 1986-1992 - 006 545 6432 which, according to the EPC, actually comes from the gasoline-powered 300E...

Did you not get a ECU when you bought that crate engine??? If not, I'd contact the seller. Probably your best bet on getting the proper one.
I did enquire at the time, but the seller only had the engine. The rest may have been sold already, or scrapped already. or unsalvageable. It didn't help that mi español es muy malo. I have visited their e-store several times since, but still found nothing. A large portion of the wiring that came with the engine had been simply cut off, which is why I have ordered and engine-side wiring harness since (124 440 4032).
 

·
Registered
E60RS
Joined
·
397 Posts
I'm the guy you bought the harness from on ebay.

I have a 95 daily driver, and the "relays" are as follows:

007 545 9632 Idle control
016 545 9532 EGR control
003 545 5205 Klima
201 540 3745 OVP

My car runs with all of them removed, just with a low idle 500rpm or so
 

Attachments

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #5
Thanks, David, that is fantastic! I have no intention of running the engine without the controllers. So those four relay-sized controllers are all I need? There is no big ECU with a 29-pin(?) connector for the engine?
 

·
Registered
E60RS
Joined
·
397 Posts
I've seen quite a few of the W201 and W124 diesels. All the non turbo cars had a relay for idle control and were very similar (as in the pictures) and all the turbo cars had the large ECU.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #7
Excellent, thank you.

According to the EPC, there are two idle regulation controllers, 0065453632 (ELR/anti-jerk) and 0075459632 (ELR). Are they interchangeable? I will need to check the IP on my engine, but if this chapter of the MM is to be believed, the anti-jerk requires an extra plug on the IP. Could I use 0075459632 (ELR) without any real problems? Or is 0065453632 (ELR /anti-jerk) preferable if my IP allows? Which of the two is the later specification, if at all?
 

·
Registered
E60RS
Joined
·
397 Posts
Anti jerk is for cars with a manual gearbox. On my Euro 250TD which has is an OM602 & a manual gearbox, it has the anti jerk system. Has the relay and a small shock absorber on the IP.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #9 (Edited)
The engine that I have came from an automatic car. But I'm going to install it in a manual. I guess I'll need a change of pump if I'm to use the anti-jerk. But I'll see when the time comes. Thanks for the info so far.

Unless, of course, somebody could tell me how to buy these parts separately from the IP...
IP6060700201a - edit.jpg
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #10
I took some time today to study the chassis-side harness, and what's left of the cut-up harness that the engine came with, and boy is it a lot to take in. I believe that I have now at least identified which "relay" goes where. Now I just have to wait for this lockdown to pass and my new engine-side harness to show up, to discover where all of the other loose ends go.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #11
Does anybody have the wiring diagram for the OM606 ARA (anti-jerk) system?

Here is a functional diagram of the ARA ELR, but is states specifically that the ARA is not applicable to 6-cylinder engines. This is in agreement with this diagram, which shows that the ARA actuator of the OM602 (and maybe OM605?) is connected to the terminals which instead drive the intake resonator om OM606.

However, both OM603 and OM606 clearly had IP's with two actuators, one for ELR and one for ARA, as well as distinct ELR and ELR/ARA controllers. So surely these must be described somewhere?

My WIS has suddenly and inexplicably failed recently, so I cannot consult that either. However, I remember that it had almost nothing on the OM606 engine, but quite a bit on the OM605.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #12
OK, so here's my next conundrum:

What is the risk if I use the EGR valve and mixing chamber of a W202 OM605 engine on my W124 OM606?

The OM606 was never available here, but the W202 was available with the OM605 engine - I should know, because I own one. Now, the EGR valve on my OM606 is damaged, probably during shipping from Spain to South Africa. And the mixing chamber flap is missing a lever.

I could try and purchase the mixing chamber lever from MB, but it may turn out to be easier to just use the mixing chamber from a W202. The geometry of the two don't seem to present a problem - the W124 OM606 and W124 OM605 use exactly the same mixing chamber (A6050900254), but the W210 OM606 uses a different mixing chamber to the W124 OM606, W210 OM605 and the W202 OM605...

The EGR valve seems to also differ by part number only; everything else, from the gaskets to the corrugated tubes, are all identical.
 

·
Registered
'86 W123 200, OM617 non-turbo, bastard 5-speed; '95 W202 C250 Diesel, OM605 non-turbo, 5-spd man
Joined
·
4,273 Posts
Discussion Starter #13

Attachments

1 - 13 of 13 Posts
Top