Disabling EGR

[Siver benz]

Hi Arthur,
We have the same engine and iam about to do the egr delete. Did you just follow the pin 24 plug 4 maf wire and the rest of the wirings and thats it? Hopefully you may be abke to read this. If i may ask for pics i would truly appreciate it. Thanks.

 

[vincentfishing]

Hi Arthur,
We have the same engine and iam about to do the egr delete. Did you just follow the pin 24 plug 4 maf wire and the rest of the wirings and thats it? Hopefully you may be abke to read this. If i may ask for pics i would truly appreciate it. Thanks.

this is a schematic for an egr emulator, very similar to the mod, not sure what engine you size you have , but wiring should be very similar other than emulator has an extra wire I think, may or may not help you.

 

[Siver benz]

this is a schematic for an egr emulator, very similar to the mod, not sure what engine you size you have , but wiring should be very similar other than emulator has an extra wire I think, may or may not help you.


Will this apply to om611 e220 cdi?
Thank you Vincent.

 

[vincentfishing]

Not sure as I did mine on ml270 ,colours and pin numbers where as shown and it worked first time with no problems, if you take off your plugs on ecu and check the colour of wires against pin numbers on schematic and they match then its just a matter of tying the 3 ? connections of the homemade mod into the right wires, as I did the easy ebaybay emulator(£50ish) I cant help with the 'mod', I took the easy way out as didn't want to buy/solder and then connect up wrong, emulator was simple,

 

[Siver benz]

Not sure as I did mine on ml270 ,colours and pin numbers where as shown and it worked first time with no problems, if you take off your plugs on ecu and check the colour of wires against pin numbers on schematic and they match then its just a matter of tying the 3 ? connections of the homemade mod into the right wires, as I did the easy ebaybay emulator(£50ish) I cant help with the 'mod', I took the easy way out as didn't want to buy/solder and then connect up wrong, emulator was simple,

Thank you Vincent. It was really a big help having the schematic diagram. I was able to hook it in my e220 cdi. After 2 days of testing , no more black smoke and no limp mode. No more black smoke. Thank you .

 

[vincentfishing]

Thank you Vincent. It was really a big help having the schematic diagram. I was able to hook it in my e220 cdi. After 2 days of testing , no more black smoke and no limp mode. No more black smoke. Thank you .

glad it all worked out well for you.

 

[dejan.slo.mb]

Cheers to all the good folks here, many useful tips and hacks for ours mercs .) I am proud owner of mb a160 2.0cdi my.2008, have it for 9 years it has 230.000km on the clock. Car started to show usual signs of egr, injector seal blowby, a bit black smoky on high revs/acceleration, sometimes it lose power hesitating and propably going to limp mode but no eml light comes on. Anyway i want to get my mule sorted a bit, so i want to get the basic things sorted out. EGR delete (with mod if possible, thats why i am here any help welcomed and appriciated), propably change all the injecor seals (smells a bit of burnt diesel in engine bay), and if possible also remove/delete swirl flaps, my friend had done it on c klass 220cdi. I have alot of spare time due to corona virus standby mode, so i think ill get my hands dirty next week and try to bring back life to my lil merc.
Hope you tell me proper way to egr mod, also for other stuff in mentioned.
Thanks in advance for any suggestion and help.

 

[ApexKek]

Hello everyone,
In the hope that anyone is still active here, im looking for help for deactivating the EGR on my 1999 facelift e320 cdi, but the circuit with the 470ohm resistor soldered to the diode on which the 1kohm resistor is soldered does not work. My car still goes into limpmode after approxemately 500meters.
The cables have all been checked with a multimeter (yellow/white MAF, red/black 12v EGR solenoid, gray/black signal EGR solenoid).

When i reconnect the plug to the EGR solenoid everything works fine again.

Do i need a different circuit to disable the EGR? The ECU should be the CDI2.

Best regards

 

[leonrsa]

Hello everyone,
In the hope that anyone is still active here, im looking for help for deactivating the EGR on my 1999 facelift e320 cdi, but the circuit with the 470ohm resistor soldered to the diode on which the 1kohm resistor is soldered does not work. My car still goes into limpmode after approxemately 500meters.
The cables have all been checked with a multimeter (yellow/white MAF, red/black 12v EGR solenoid, gray/black signal EGR solenoid).

When i reconnect the plug to the EGR solenoid everything works fine again.

Do i need a different circuit to disable the EGR? The ECU should be the CDI2.

Best regards

Hi there,

The mod should work as you have the OM613 engine. Maybe make sure the connections are correct...

 

[Siver benz]

Hello everyone,
In the hope that anyone is still active here, im looking for help for deactivating the EGR on my 1999 facelift e320 cdi, but the circuit with the 470ohm resistor soldered to the diode on which the 1kohm resistor is soldered does not work. My car still goes into limpmode after approxemately 500meters.
The cables have all been checked with a multimeter (yellow/white MAF, red/black 12v EGR solenoid, gray/black signal EGR solenoid).

When i reconnect the plug to the EGR solenoid everything works fine again.

Do i need a different circuit to disable the EGR? The ECU should be the CDI2.

Best regards

1st review the diode and resistor circuit. Make sure the horizontal line in the diode is on the side of the egr (1kohm)
2nd, make sure to solder it well.
3rd, did you connect the gadget directly to the maf and the egr actuator? If yes, it should work fine as long as you disconnect the egr actuator plug.
If you are working inside the ecu compartment, probably the yellow/white wire for maf is not the correct wire. Try unpluging the ecu plug and take a picture of the underside where you will see the pin numbers. Example: for maf pin 5, it is pin 24 in the ecu plug 4. To identify plug 4, start counting the plugs from engine side as plug 1 then going out to the fender side as plugs 2,3,4,5. Looking for pin 24 in plug 4,1st identify pin 21 then get hold of the wire for pin 21. After grabing hold of the wire, get hold of the next wire as 22, then next wire as 23 then the maf wire 24. In my engine wire for pin 23 is not present.
Identifying egr actuator wires would be in plug 3, again taking picture of the underside you will see pin numbers 37 and 52. These 2 wires are colored red and black and are intertwined with each other. Try to connect the corresponding wires making sure it is making contact. Unplug the egr actuator and start the car. For better guidance, mr. Vincent fishing gave me a diagram of the connection, it guided me, it will also guide you. Hope this would help. Good luck.

 

[ApexKek]

Thanks for your reply.
I installed the circuit in the ECU compartment, and as mentioned before i tested the continuity of the wires with my multimeter.
This is also my second circuit because i thought the first one was not working, but having the same issue with the new one as well makes me think... Does it matter what color my resistors are? Normally that shouldnt affect the way the circuit functions...

Best regards

 

[Siver benz]

Thanks for your reply.
I installed the circuit in the ECU compartment, and as mentioned before i tested the continuity of the wires with my multimeter.
This is also my second circuit because i thought the first one was not working, but having the same issue with the new one as well makes me think... Does it matter what color my resistors are? Normally that shouldnt affect the way the circuit functions...

Best regards

There is a presceibed wattage for the resistors and diode. As for the diode, it is important to follow the flow of the circuit, which is towards the egr actuator part hence the silver stripe on the end part of the diode. Most probably you have the right egr bypass gadget but the wrong wires in the ecu compartment. I also tried tracing before using the multimeter but not able to find the right maf wire. I also had the same experience, 5 mins it is running fine then limp mode. Worst, when I turned off the engine and start again, The engine just cranked and not turn over. It gave me goosebumps and immediately remove the gadget. It eventually turned over. I almost gave up. After again a few months and much thinking, i was able to find the right wire by performing what I wrote to you. Good luck.

 

[ApexKek]

Here is how i wire it up, as mentioned before i have throughput from the yellow/white wire at the ECU to the #5 wire on my MAF. i still dont see why the car would still limp... unless the MAF cable is connected elsewhere.

Best regards

 

[Siver benz]

Here is how i wire it up, as mentioned before i have throughput from the yellow/white wire at the ECU to the #5 wire on my MAF. i still dont see why the car would still limp... unless the MAF cable is connected elsewhere.

Best regards

This the picture of my ecu plug 4. If you will enlarge it, you will see the numbers. Behind the numbers are the corresponding wires. Get hold of wire 21 and count until you get to wire 24 and that would be maf. You do the same to egr actuator wires. It is red and black twisted on each other.

 

[Kev555]

For anybody that not comfortable with messing with car wiring looms, just get your EGR mapped out of the system by a verified remapping specialist providing theres no known issues with different models

 

[Alex Craig]

Hi all a little off topic I've carried out this repair /mod and it has cleared the fault codes EGR Boost pressure and inlet motor
But the problem I'm getting now is P0100 mass air flow (hot film) I brought a cheap mass air flow from euro didn't make a difference I then brought a boosch one worked great for about 5 minuets and the code is back again and the car is in limp mode any one had any experience or success with this code
Any info would be fantastic thanks

 

[oigle]

Try the maf delete posted by stumo (I think) some time back. Cheap and easy trial. Have you checked for boost leaks - split hoses etc?

Ian.

 

[Alex Craig]

Try the maf delete posted by stumo (I think) some time back. Cheap and easy trial. Have you checked for boost leaks - split hoses etc?

Ian.

Yes checked for leaked check all the pipe work everything seems fine nothing I can see when I fitted the new genuine maf the thing ran fantastic for about 5 minutes then it was back again so I'm assuming the mod blow the new maf I've seen loads of post of people saying the new maf sensors are rubbish even if you buy genuine ones I've ordered the resistors to carry out the Maf mod so fingers crossed that works

Thanks for the reply

 

[Alex Craig]

Just an update I have carried out the EGR Mod the M55 (swirl flap motor) Mod and now the Maf sensor Mod and I'm happy to say they have all worked amazing the car is driving like new so glad I found the forum only thing is she is a little slow off the line a little bit of lag but I can live with that
Thanks

 

[ajlsl600]

Out of interest.. Costing of all that was?