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W210 EGR Valve - Supply, Fitting & stuff.

Jules-d

New Member
Joined
Nov 18, 2007
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4
First question is the supply of the darned thing.:)
A brief search of the internet reveals that car-stuff.com out in the USA allegedly supply them for $119. Now this is just tooooo tempting as the unit costs some £270 over here! Has anyone ordered in from the USA? Is there a part number? Is the American E320 a diesel or petrol engine? The company don't seem able to confirm one way or the other.
Secondly fitting the thing. Not wishing to appear a total dolt where is it fitted? Are there any traps that I am likely to fall into? I'm asking at this stage as I have only just gotten my paws on the car so haven't taken any covers off or looked further than oil / water etc. I also need to do the Glow Plugs so will probably do them at the same time but they are on opposite sides :)
Talking about the EGR, what I don't understand is why it doesn't work when the engine is turned on after a stop, but if you do the stop-ignition off-immediately switch back on thing then it does work.... Can the unit be cleaned / Reconditioned?
Finally - Where can I get hold of a workshop manual or is that the holy grail of all us amateur mechanics?
Other than that ...... Helllllooooooo everyone! :)
Jules
(2001 green panzer)
 
You never know..

you just never know with those yankees :) I am just being cautious :)
 
Mine's a diesel..

just in case i mis-read the last :) Mine is the E320cdi W210.
 
EGR valves only operate under light cruising speeds and are closed at all other times.
Some people clean them, but the spring sits in a poor environment with the heat from the exhaust.
Many just blank them off
 
Blank it off?

Soooo... what the purpose of the thing to start with then? Steep learning curve and all that :)
 
The EGR valve is a means of returning harmful gases back to the inlet where it is burnt again. This valve opens when driving lightly and is closed at all other times
 
Soooo... what the purpose of the thing to start with then? Steep learning curve and all that :)

Originally introduced in the late 60's (ISTR) as a response to the question of smog and unburnt hydrocarbons in the exhaust. The idea was that by reintroducing a portion of the exhaust gases into the intake manifold these unwanted products would be recombined and burnt.

However, and to quote a man with 50 years of Mercedes experience to draw upon....

"Ah the EGR, yes they block up often within a few thousands of miles and no one notices that they're not there."
 
Originally introduced in the late 60's (ISTR) as a response to the question of smog and unburnt hydrocarbons in the exhaust. The idea was that by reintroducing a portion of the exhaust gases into the intake manifold these unwanted products would be recombined and burnt.

However, and to quote a man with 50 years of Mercedes experience to draw upon....

"Ah the EGR, yes they block up often within a few thousands of miles and no one notices that they're not there."

That would certainly be the case as they are not part of any test, and other than certain running faults they never get touched
 
That would certainly be the case as they are not part of any test, and other than certain running faults they never get touched

Maybe in "the search for a greener planet" -insert current buzzphrase- :) the idea might be revitalised... and that'll be "YAW" (yet another widget) that'll cost us money.
 
Maybe in "the search for a greener planet" -insert current buzzphrase- :) the idea might be revitalised... and that'll be "YAW" (yet another widget) that'll cost us money.

Thats it, we shall soon get stopped by little green men who want to test your EGR valve :):)
 
egr is all to do with nox best to blank egr valve if engine electrics dont sense egr, better for long life of engine
 
You can only blank the EGR off on the N/A engine. It isn't possible to do it on the turbo'd version without snipping wires in the MAF and even then thats only a bodge I've read about one person doing.
 
As an experiment to see what would happen, i tried disconnecting the egr on my 270CDI by removing the vaccuum pipe and plugging it.....the engine didnt like it!, the electronics sensed something wrong and activated limp mode. Pipe re-connected, no problem.
 
I have a w210 - Where is the egr valve located in the engine bay

Does anyone have a photo by any chance.

Thanks

MFK
 
standing at the front of the car looking under the bonnet, its on the right hand side of the engine under the plastic engine cover, near the front of the engine just above the alternator belt.
 

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