Disabling EGR

supermed41

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2001 ML 270 lux pack
My 2003 update is obviously a little different from yours. Under my large hose, I have the alternator and to one side, the oil filter housing, so I'm guessing a bit.
However, it appears, from what you say, that an oily mess is leaking from the large hose where it joins the inlet manifold. This sounds like the gunge that we have been referring to that chokes up the manifold and egr valve. To have it leaking from that hose, however, would indicate you have an air leak from the hose. This could be from around the clamp or possibly from a split in the hose. As this is under boost pressure, it should be attended to.
You need to have your manifold and egr removed and cleaned out properly, the swirl flaps and motor checked and the shunt done to stop it gungeing up again.

Yes Oigle, that's what is happning, i think is the clamp around the hose and i'll get it checked and will post back.

Thank you.:):):)
 

cl203

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fwiw when i was getting my remap done, the chap said that he could delete/disable the egr valve using star diagnosis, he works as a diagnostic tech at merc so unless he was talking porkies, there is probably a way of doing it electronically
 

alexanderfoti

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fwiw when i was getting my remap done, the chap said that he could delete/disable the egr valve using star diagnosis, he works as a diagnostic tech at merc so unless he was talking porkies, there is probably a way of doing it electronically

There is a seperate map for the EGR.

You can turn it down in the map to about 1% i belive but no lower.

This way is VASTLY cheaper and wont be overwritten by an ECU update.

Then again, the ECU remap way would the "proper" way to do it.
 
OP
D

dieselman

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on the white wire it gives 1.5V- 3.9V depending on rpm given. it that correct? Would you please explain to me how does this mod work? when mof gives 3.5V thought the circuit ECM thinks that EGR is working?

Thanks
The voltage sounds a bit low, but could possibly be correct depending on the MAF and how it is calibrated.

The mod works by shunting the MAF output voltage to Gnd so drags it lower when the EGR valve is supposed to be open. This is when the engine is either at idle or very low load condition, so the low output reading of the MAF.

It's good to hear it's universal. I'll be applying it to our VAG car when I get round to it.
 

chancha

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Finally got round to fitting my shunt to my w210 e320 cdi. Unfortunately the car still smokes sos I guess it rules out the egr. After fiddling around with it I noticed that if I disconnect the vacuum line to the transducer the car goes into limp mode. Not sure if this should be happening.

Getting back to basics I know that I have 3 leaky injectors but need to be sure it is this that is causing the smoke before I shell out good money on them. When I say leaky, I mean that they failed a leakdown test. Anyone offer any advice on this?

For reference the info that dieselman gave for the ML 270 is slightly different for the e320.

maf pin 5 yellow/white ecu pin 24 plug 3

return wire tranducer grey/black ecu pin 50 plug 2

12v red/grey ecu pin 37 plug 2
 

toby1

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My electrical engineer friend has just given me a pre-wired harness for me to fit.

I need to buy some odds and ends first, but I'll be taking pics as I go.

Not sure when I'll have time to do this as weekends are booked up, but I'll post back when done.
 

jks001

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Finally got round to fitting my shunt to my w210 e320 cdi. Unfortunately the car still smokes sos I guess it rules out the egr. After fiddling around with it I noticed that if I disconnect the vacuum line to the transducer the car goes into limp mode. Not sure if this should be happening.

Getting back to basics I know that I have 3 leaky injectors but need to be sure it is this that is causing the smoke before I shell out good money on them. When I say leaky, I mean that they failed a leakdown test. Anyone offer any advice on this?

For reference the info that dieselman gave for the ML 270 is slightly different for the e320.

maf pin 5 yellow/white ecu pin 24 plug 3

return wire tranducer grey/black ecu pin 50 plug 2

12v red/grey ecu pin 37 plug 2

You can test leaky injectors like this http://uniteddiesel.co.uk/tips-troubles.php or http://uniteddiesel.co.uk/tips_docs/Bosch common rail diesel injectors checking back leakage.pdf I have tried that myself and first and second injectors had a huge leakage.
My friend is going shutdown E320 cdi but he couldn't find solenoid location and wire diagram, can you put some pics of them

Thanks
 
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jks001

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Does anyone know how to shutdown EGR on VW Tuareg V10 TDI?
it has 2 EGR, one on each side :confused:
 

oigle

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Finally got round to fitting my shunt to my w210 e320 cdi. Unfortunately the car still smokes sos I guess it rules out the egr. After fiddling around with it I noticed that if I disconnect the vacuum line to the transducer the car goes into limp mode. Not sure if this should be happening.

In my opinion, if you are getting limp mode with the transducer disconnected but OK with it connected, then you have not done the shunt properly. I didn't remove the vac line - I just removed the electrical connection at the transducer. Try it that way and see if it still "limps".
I wouldn't rule out the EGR causing the smoking problem until you sort this out properly.
 

Naraic

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You'll not be here long...you boys from Armoy...
 

chancha

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In my opinion, if you are getting limp mode with the transducer disconnected but OK with it connected, then you have not done the shunt properly. I didn't remove the vac line - I just removed the electrical connection at the transducer. Try it that way and see if it still "limps".
I wouldn't rule out the EGR causing the smoking problem until you sort this out properly.

I am thinknig the same. With the vac line connected and the transducer disconnected the car runs fine but with smoke. With the transducer disconnected and the vac line disconnected the car loses power. I'll have another look at the wiring.
 

jks001

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Does anyone know how to shutdown EGR on VW Tuareg V10 TDI?
it has 2 EGR, one on each side
 

chancha

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I am thinknig the same. With the vac line connected and the transducer disconnected the car runs fine but with smoke. With the transducer disconnected and the vac line disconnected the car loses power. I'll have another look at the wiring.

checked the wiring and all is fine. Disconnected both pipes to the tranducer and blocked both. No loss in power but still smoke. Is it possible that the egr valve is stuck open? I'm not too sure how the valve operates and if so would it be possible to blank it off?

rgds kevin
 

oigle

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checked the wiring and all is fine. Disconnected both pipes to the tranducer and blocked both. No loss in power but still smoke. Is it possible that the egr valve is stuck open? I'm not too sure how the valve operates and if so would it be possible to blank it off?

rgds kevin

It is possible to have it stick open. The only logical way to blank it is with a thin plate between the egr manifold and the head, towards the back of the motor. I would have thought that if it was stuck open and the shunt was in place, then the ecu would note the variation in the airflow through the maf and once again throw a limp mode. I'm no expert - maybe dieselman or one of the techies might care to comment there.
 

Alex Crow

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i did the 210 320cdi today.

connections were...
MAF sensor signal wire = pin24 connector no.4 yellow/white
EGR vacuum transducer power supply = pin37 connector no.3 red/black
EGR vacuum transducer switched earth = pin50 connector no.3 grey/black

before mod, at idle maf sensor voltage = 2.28 egr closed / 2.02 egr open
after mod, at idle modified maf sensor voltage = 2.28 'egr closed' / 2.00 'egr open'

the car drives well and logs no faults, all in all seems to work very well indeed.
 

9derekt

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egr valve

i had my e320cdi egr disabled today by alexander patient today there is avast improvement & cost was reasonable very happy with result
 

Naraic

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i did the 210 320cdi today.

connections were...
MAF sensor signal wire = pin24 connector no.4 yellow/white
EGR vacuum transducer power supply = pin37 connector no.3 red/black
EGR vacuum transducer switched earth = pin50 connector no.3 grey/black

before mod, at idle maf sensor voltage = 2.28 egr closed / 2.02 egr open
after mod, at idle modified maf sensor voltage = 2.28 'egr closed' / 2.00 'egr open'

the car drives well and logs no faults, all in all seems to work very well indeed.

Pins 24 37 and 50...where are they? Thanks.
 

toby1

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Hopefully my old man is giving me a hand with this at the weekend.

I'll take pics as we go, assuming he's in and has the tools (as I don't!).
 

toby1

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Just a thought, silly question probably: I take it the pin numbers are read left to right, top to bottom?
 

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