What's missing?

[grober]

What's missing in this 124?

This white plastic component(PICTURED BELOW) is mounted on the nearside front of the inner wing of my 96 E220 coupe. Its at the end of a tube leading back to the fuel tank charcoal filter under the wing. I always thought it was missing a bit-a cap or lid or something. Maybe its mean to be like this. Anyone with a late w124 of that vintage like to check if they have the same or different. thanks.

 

[janner]

Mine just has the hole. Not much use I suspect.

 

[grober]

Earlier use of this portin the wing.

Thanks Janner. anyone else??I know that on some 190s and earlier w124s this hole in the inner wing was used for 2 tubes one of which was a charcoal filter vacuum line from the manifold switched by a thermo vacuum valve mounted on the cylinder head. This was abandoned on later engines with vacuum line being switched electrically via the ECU and connecting to the charcoal filter via a hole in the wing just below the nearside bonnet hinge.Still puzzled tho.

 

[219]

My 300TE-24 has exactly the same as in the first photo .

 

[ADY1983]

I Will have a look when I get home, but I think I have vacume hoses going to mine, is the head light adjustment, up and down, controlled by vacume??

 

[grober]

purple tube

Yes Ady the headlight up and down adjustment is controlled by vacuum. Fairly easy to distinguish the charcoal filter evacuation system from the headlights. In my pic the headlight vacuum tube is the purple tube. In Janners post you can just see where it enters the yellow connector on the headlight unit.

 

[Ian B Walker]

Just been out to look at mine and guess what. I have the plastic bit as shown but nothing connected to it. Will as my contacts at Mb Preston for you tomorrow.

 

[grober]

Thanks for that Ian. I suspect that its just a convenient termination for the pipe that leads to the charcoal filter. Maybe just a legacy from the previous older design but seems very elaborate for just a termination. Thats why I queried it. Be interesting to hear what MB PRESTON have to say.

 

[del320]

Just a hole in mine - as per Janner
My old 300CE-24 had the bit, though I never found out what it was for!

 

[imadoofus]

Maybe it's a 2.2 vs 3.2 thing... I've got a hole too.

PJ

 

[grober]

charcoal filter picture.

I have just replaced the charcoal filter which is part of the fuel evaporation system. Its recommended that you change it at about 72k miles altho many MB Dealers dont seem to bother? There are many different sizes/shapes/locations to these filters in different models but they all have them hidden somewhere. In the w124 series its hidden under the wing behind the plastic wheelarch liner. I took a picture of the old one before removing it. It was plastic with a metal retaining clip. The new one was all metal in construction. part no 124 470 03 59 There are 3 pipes stubs at the top to connect the various lines
1.the vent line from the petrol tank(red)
2.the central pipe which evacuates the filter via a ECU controlled valve to the inlet manifold (green)
3. a inlet/vent? line (blue) which leads to the mystery white plastic union described in my first post of this thread Hope this partly solves the mystery of the plastic "thingy"

 

[crammy69]

Did you ever find out about the white plastic thing....

I am going to pick up my charcoal filter tommorrow (ordered and paid for it last week) to do the same job, and in preparation had a look and see that I have the same white plastic 'junction' in the engine bay with nowt attached to it. Im assuming this is normal as you have the same, but out of interest did you ever find out if there should be somthing attached? ( mine is the 300CE 24V 1990 model by the way.)

Cheers
Simon

 

[SilverSaloon]

its where the flux capacitor is connected to on some high spec models

 

[crammy69]

Given I havent even got A/C in mine, Ill assume mine wasnt specced with one of those! ;-)

 

[kth286]

Non air condition cars have as per grober's picture (first post). Nothing else is supposed to be connected to it.

It is merely the termination for the air admitance to the charcoal filter system.

However with air condition models this air admittance pipe terminates in the chassis box section just about where the front wishbone is fixed to chassis.

So there is the blank hole in the inner wing for those models.