vitasikm

Hi

Quick question - has anyone used Star c3 to see live data from this weird set-up -w210 053 with m104 engine, Bosch 0 261 203 619 ECU and VDO unit for idle speed/cruise control? My main question - will it show percentage of butterfly valve open?

Another thing - are these separate units require coding as well? Is it possible if it has VIN plate in it and its not the same as main ECU it will not play ball with it???

I have idle speed, but no reaction when throttle is pressed.....I did a engine conversion and that module came from different car and not the engine/ecu donor.

More at:

https://mbworld.org/forums/mercedes-...r-oh-dear.html

Plutoe

Quick question------Quick answer----NO

Another thing-----Quick answer is YES

I have idle speed------you need the donor ECU or virginize the ECU and flash with donor data

vitasikm

Additional inf0:
current car: w126
Engine and main ecu -w210 from burned out car
Actuator control module - ebay

When immo emulator was installed main ECU was virginized!!!!

Plutoe

This is the W210 repeat W210 forum----W126 very different diagnostic animal---do you have a 16 or 38 pin diagnostic plug---if you have 16 then the HHT or DAS will not work---all you have to go on is on/off ratio(blinkcodes)----I havent got the FFI how to flash the module----I think you are fooooooooooooooooooooooooooooooooooked!!

vitasikm

Thanks for reply.

As I say car itself is w126, but engine, loom and ecu is from w210, so its connected to its own 38 pin round diagnostic plug. Ecu is bosch HFM series, so can be read either by LED, or by star.

Plutoe

I am still confused-----can you start the car??

vitasikm

Yes- car starts ( a bit difficult) and runs beautifully at idle speed. Problem is it has no throttle response whatsoever. Not even change in sound, spatter etc,etc. As if it does nothing. Obvious questions - yes throttle cable is there, set up properly, pulls throttle valve lever all of its way. Really puzzled .....

Plutoe

The W210's have a throttle position sensor that electronicaly(no wires/cables) tells the ECU it's position and bla bla----The acceleration is controled very differently on the W126's---there is linkage, reference pots and an acceleration control unit---WTF!!

vitasikm

On m104 engine in w210 ( assuming its not e-gas fly by wire) that sensor is part of the actuator assembly. Look at the link in the first post, might give you an idea how everything works.

Generally the idea inside is like this:

Mechanical throttle lever for bowden cable ( actually goes trough some mechanical links) acts in 2 stages. stage 1 up to 50% -ish open(pulled cable) will change the value of the TPS, but will not act on the butterfly valve itself. Next 50 % will change the value of TPS further and open up to 50% butterfly valve. I assume actuator does the rest 50% when needed. Butterfly valve has its own second TPS. You can see values recorded in my other post. look at the resistance between pins 3-1-14 and 3-2-14 , 1 and 2 being the output signals of both TPSes inside the actuator.

EDIT: Probably due to my poor english we cant understand each other. Engine, ecu, actuator and actuator control unit are from w210 which makes it essentially w210 regardless of the shell its fitted to. For that matter I could have fitted it to a garden tractor and it still would run w210 electronics.

If one looks at the wiring diagram for w210 with m104 engine closely - its quite simple to see it requires minimal external inputs in order to run. The whole signal exchange between w126 car and engine ecu is ground, +12v battery, +12v at ign. On, +12 v when starter is engaged. In other direction car gets few signals from engine harness or ecu - RPM and temperature - nothing else.