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Ok so its 4 cyl w124, it means you need more parts then. Yes you would need engine bracket from e320, ac bracket too and exhaust.
COnsidering you have a convertible, this make it clear that you dont want to mess with too much body wiring from the w124. Remember the c class it 4 doors.
So keep it as simple as possible for wiring, just use the ECU, EGS and ABS system from the w202, period.
Hi there, reeding through your thread got my attention🤗..
My name is Gaetan and i'm planning to improve my 320TE from 1992 by keeping as much original and the options as it has ..still working and ad some more options 😁.
Do you mind if i ask a few things, like the right module (with ASR and Cruisecont.) for this gearbox i have: 722.6 34 ,.. and does it fit directly to the diff... etc ?
It also looks like my 320 m104 has the first ecu variant and is very difficult to find: 013 545 17 32 would it be realistic to swap al modules to start with, with a newer 320 TE from 1996 for ex. and the same or more options maybe ?
There is no way to fit a 722.6 transmission into the old M104 with HFM system (92-96) unless you use standalone transmission controller, which i tried and didnt work out well. You need to swap ECU, ABS/ASR/EGS all togethet to make it work, it communicates via can bus which the old ECU doesnt have.
For firtment, yes it will fit with the engine and differential
Yeah.., I've already considered to change the whole thing if that's a realistic option.
Besides that the car and engine being in top condition and perfectly maintenanced,.. electrically it already shows signs of failures.. even with the new engine cable harnas.. : Bad ignition firing on one of the pistons time to time , fuel-pump signal to relais sometimes drops out, gasoline smell which correlates in huge consumption.... i just re-wired the Egas throttle-valve, works fine now but now i think its The E-gas module who goes into limp-mode when engine switch into idle. soon or late I'll be out of parts and beyond repair...
so.. heh
Can you give me some directions where tot start looking for info and for these modules , which type or year 🤔 ? i think these are the options that are connected to it : Cruisecontrol, ASR, ABS,
Kind regards Gaetan
Originally Posted by Brabus388
There is no way to fit a 722.6 transmission into the old M104 with HFM system (92-96) unless you use standalone transmission controller, which i tried and didnt work out well. You need to swap ECU, ABS/ASR/EGS all togethet to make it work, it communicates via can bus which the old ECU doesnt have.
For firtment, yes it will fit with the engine and differential
For this type, the easiest way is, you have to find a w202 as a donor, c280 (inline 6) 1996 and up with 722.6 transmission, the earlier model has one speed sensor on the rear which makes the conversion easier, thats what i suggest. You should get a complete donor car to make the job easier.
the rest you can read in this thread for more details.
Look what i found .. https://www.marktplaats.nl/v/auto-s/...ombi-280-sport
Could it be this one ..?
It has al the same options like mine and more ..
i can not find if it has the right automat.gearbox 722.6 34: 580nm in it .. instead of buying a separate one from a s210 2.70 cdi
So i assume its possible to reprogram the ecu for a 320 engine ?🤔
Originally Posted by Brabus388
For this type, the easiest way is, you have to find a w202 as a donor, c280 (inline 6) 1996 and up with 722.6 transmission, the earlier model has one speed sensor on the rear which makes the conversion easier, thats what i suggest. You should get a complete donor car to make the job easier.
the rest you can read in this thread for more details.
That car is 1998, i think it has the V6 engine and das 3 system.
you need to find 1996-1997 c280 with inline 6 engine and 722.6 tranny, and dont go for diesel
Remember this project is not a simple project, it need a lot of electrical work and modification, this is not a bolt on conversion.
Please be aware before you proceed
Sure i'm aware of the magnitude of this project ... I'm very technical in my everyday occupation..
It was the idea from the very beginning before i could buy the car from a desperate oner when the car already had a few electrical issues,.. so many other potential buyers later, finely the car came to a hold in the "Mercedesstraße in Stuttgart " 😁where i picked it up 🤷🏽♂️
Besides al other funny things that happened then... I'm pretty sure I'll keep the car for a very long time, and so the idea was borne to merge al best things of MB of that period into one Car ., maybe also a decent cup-holder😜
My only concern is to find the complete diagrams of both types.. i had a free web site: Diakom-auto from Mitchell International.. that seemed to be disappeared now, and i was stupid enough to think it would stay online forever 🙄
Concerning the gearbox what you mean the 722.634 from 2.70cdi is not good ? Because all m104 modifiers approve this to be the best one because its 580nm strength? The c 208 has only one type that may fit .. aren't they not the same type?
All diesel transmission has the 580nm, i call it the big NAG, and all gasoline 6 cylinders engine has 330Nm, small NAG
the ratio difference between both is pretty clear, the big NAG has lower gear ratio, meaning it needs engine with big torque to make it runs well.
I didnt say its not good, its just doesnt match the 320 6 cyl engine. Yes it has 580nm strength, but your 320 engine couldnt even break the 330nm.
If you install a C36 engine, yes it has enough torque to run big NAG.
I did this on my v6 w210 e320, with big NAG, the car feel super sluggish.
why they install this on diesel? Its because diesel engines has high torque and low rpm range, so they need lower ratio transmission to make it smooth
okay ... i see, didn't realize these small differences in ratio made that much difference , and most of these converters also put turbines on there m104s thats probably why they approve the 722.634.. ...But than there is still the 722.629 that was Stock-version on the c280 m104, .. maybe its a special gasoline version with the ratio of the 330nm ? 🤔 ..
Anyways..i will probably use the one that'll come with the car ill find .. if il find .. because where i live the big engines are mostly like 2 L or 2.5L.. and Diesels 😁
These 202 from 1996/97 are very rare ... i also discovered that there are w210 versions even with the 320 6 inline m104, also until 1997 but starting from 94 i guess .. is there a probability to use these version as donor ?
You mentioned also something about the earlier versions of the 1996 that i didn't get wel: quote "the earlier model has one speed sensor on the rear which makes the conversion easier" is this about the gearbox 'and' or the electronics earlier than 1996 ?
Thanks Again.. hopefully you don't mind some of my questions might be irrelevant or silly to you ..but i'm that type who like to know everything before i start 😬
All C280 with m104 has small nag except C36.
The torque converter/turbine doesnt really matter, just get the converter that comes with the transmission.
Please be aware thar V6 transmission would not fit, unless you change the bell housing to M104 type.
For w210 you cant use as donor, why?
Because all w210 with m104 engine has 722.5 transmission (this is not full electronic). E320 that has 722.6 transmission is 98 and up, which is v6 engine. Due to this setup, the whole wiring is different, different ecu, different abs and different egs. Maybe it will work but it will be more and more complicated.
Late 1996 and early 1997 w202, only has one speed sensor located on the differential to indicate rear wheel speed, this signal is used for egs, abs and asr to compare the rear wheel speed and front wheel speed if there is any slippage. This is how the system works.
E320 with abs has one speed sensor om the differential too, so it makes the conversion easier.
The late w202, 97 and up, it has speed sensor for each wheel, meaning they have 4 speed sensor total instead of 3.
Thats why i said, its much easier to get a donor from 1996 Or early 97 w202 C280.
Yes thats ASR switch for older mercedes, for the pictures that you postes, i dont think thats the wheel speed sensor, i am quite sure that the brake pad sensor wires, speed sensor wouldnt be located there
Thats cable is going to the calipers, so im 100% sure thats brakepad sensor, and im pretty sure 96 and older mercedes only have 3 sensor including S class
sorry for being late. The last weeks I had lot of work with all my stuff, job and hobby. The C36 donor is parted out and gone now. I pulled all cables and mechanical parts. At the moment I'm looking for a nice A124 but the market in Germany has raised to much higher prices.
Brabus I send you my email address in a private mail. Thanks for all your help. I think my next step is to prepare the wiring, split the wiring looms, remove all unneccessary wires.
Take out the whole wiring from the w124 engine bay, you wouldnt need it anyway, except for extra fan, AC, and battery. Leave all the plugs that goes into the interior, you will need them.
Same thing with fuse. You will need the w124 fuse box to connect the w202 wiring
I know there are serveral wiring looms in w124 engine bay: engine wiring loom - this loom comes out completely. Next there are wiring looms to each headlight, one on the left inner fender and one on the right inner fender. On the left side there are cables for Headlight, turn signal, Headlight wiper, AC, Fans, ABS pump, MOT-valve. Only ABS pump wires will be replaced. Right side you have cables for coolant sensor, washer system, horn and also headlight unit and headlight wiper. Additional there is generator wiring loom. All of them remain there. The w124 speciality are the three or four wiring looms under the windscreen wiper box, there is a small sheet metal tunnel, very narrow. There goes the ECU-to-Dashboard wiring loom which I have to remove. Maybe I have to seperate some wires out of it for driving some gauges of the instrument cluster directly (f.e. oil pressure, coolant temp). But this is not absolutely clear now and also it is not the most important task here. Most important is to get the CAN-Bus-Network running. No wire should remain unconnected or unused. So the best is to build the whole electrical system for engine, trans and brake on the bottom beside the car. There you can test and fix. I will try that.
Hey you remember that small black relay next to TCU? I asked you about its function a few weegs ago and I figured out it is for reverse lights.
Last edited by Benzdriver91; Jun 3, 2022 at 03:53 AM.
Reverse light? No way, reverse light is wired directly from fuse to gear shifter, gear shifter then connect the 12v to reverse lights when lever is moved to R
there is no relay.
See post #34 that's the relay I mean. Both output wires go to the rear lights. I don't know what exactly they do with the rear lights but I think this could be a relay for reverse lights.
I dont recall any relay going to the rear lights, rear light on w202 in controlled by a module, not just a relay, i could be wrong, but on my installation, that relay specificly is a relay for ABS pump, maybe is a different setup or its aftermarket.
I’m getting a w140 s320, would that work ? JUST CHANGE THE WHOLE ENGINE GEARBOX wiring loom . The instrument panel would have to be modified, it ihas 722.6 from factory…so should install without too much difficulty with the EGS
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