Egr cooler delete 335d e92 -2007
Discussion
Hey!
Im new to this website and this is my first post. Before I ask my question I just want to thank all of you guys. Without these forums there would be a lot harder to find information on problems on these cars. So thank you all for posting and sharing your experiences.
My question:
My EGR cooler is probably leaking. Im sometimes getting this cloud of white smoke when I drive. It will smoke like sh** and after a couple of minutes it is gone. It doesnt smoke so much now but there is this white liquid on the edge of the tailpipes and it feels a bit like oil but smells like burnt coolant. Some of you will probably say that it might be the head gasket. Well, I dont have any white residue on the oil cap. And the oil level is at half and barely moves when I check the dipstick from time to time.
A friend of mine who is a mechanic at bmw says that he is pretty sure that it is the egr cooler failing.
Anyway, when removing the cooler and the egr valve. Should I remove the whole assembly including what looks to be a thermostat? (Where my finger is laying on in the pic).
Also, should I just plug this line that goes to the egr valve? (Seen in pic 2)
Is it something I need to be aware of when doing this delete?
Should I just connect the coolant hoses to each other after removing the cooler?
Pic 1: https://drive.google.com/open?id=0B58wN9piB_sGRW84...
Pic 2: https://drive.google.com/open?id=0B58wN9piB_sGYzRS...
Pic 3 (another pic of the egr thermostat): https://drive.google.com/open?id=0B58wN9piB_sGS0J3...
Im new to this website and this is my first post. Before I ask my question I just want to thank all of you guys. Without these forums there would be a lot harder to find information on problems on these cars. So thank you all for posting and sharing your experiences.
My question:
My EGR cooler is probably leaking. Im sometimes getting this cloud of white smoke when I drive. It will smoke like sh** and after a couple of minutes it is gone. It doesnt smoke so much now but there is this white liquid on the edge of the tailpipes and it feels a bit like oil but smells like burnt coolant. Some of you will probably say that it might be the head gasket. Well, I dont have any white residue on the oil cap. And the oil level is at half and barely moves when I check the dipstick from time to time.
A friend of mine who is a mechanic at bmw says that he is pretty sure that it is the egr cooler failing.
Anyway, when removing the cooler and the egr valve. Should I remove the whole assembly including what looks to be a thermostat? (Where my finger is laying on in the pic).
Also, should I just plug this line that goes to the egr valve? (Seen in pic 2)
Is it something I need to be aware of when doing this delete?
Should I just connect the coolant hoses to each other after removing the cooler?
Pic 1: https://drive.google.com/open?id=0B58wN9piB_sGRW84...
Pic 2: https://drive.google.com/open?id=0B58wN9piB_sGYzRS...
Pic 3 (another pic of the egr thermostat): https://drive.google.com/open?id=0B58wN9piB_sGS0J3...
Personally,in you position,I would just bypass the cooler. (Ie remove the cooling pipes from the EGR cooler). Then check to see if you are still getting the same symptoms.
If you need to remove the EGR on a full time basis, you need to consider it more carefully,and map the sotware at the same time, otherwise you'll get EML lights, and possibly limp mode.
If you need to remove the EGR on a full time basis, you need to consider it more carefully,and map the sotware at the same time, otherwise you'll get EML lights, and possibly limp mode.
These engines run better with the egr fitted. I've tried an egr delete and it gave worse power and mpg. On some of the very old BMWs deleting the egr gave more power but the newer ones run better with egr.
This advice is based on my experience, working on BMWs since 1994 and owning quite a few.
This advice is based on my experience, working on BMWs since 1994 and owning quite a few.
The original problem is trying to diagnose if the EGR cooler is leaking water. Disconnecting the water cooling for a shortish period of time will do this effectively. No the engine won't overheat, (unless there's something else wrong with it). There's very few downsides. The only thing is, doesn't the EGR cooler plug directly into the engine block?, making it harder to disconnect.
mardanmarre said:
You have to remove the air box to be able to access the hole in the engine block. Then you just plug it. I just want to know if there are any known (prooven) problems with removing the egr if you dont have a DPF?
No problems with removing the EGR. EGR does not operate anyway when the engine is on high output. It's purely an enviromental measure to reduce Nox. (It reduces speed of combustion, and therefore reduces peak combustion temperatures, and therefore the formation of harmful oxides of nitrogen.Did they change the egr cooler on your 640d?
Seems like this part is prone to failure. I want to remove it completely instead of buying a new one every time it breaks.
Im running at 340hp with the dpf still fitted. Going for a dpf delete first then ill test to run without the egr for a while and see if it makes a difference.
Is there someone here who runs without EGR?
Seems like this part is prone to failure. I want to remove it completely instead of buying a new one every time it breaks.
Im running at 340hp with the dpf still fitted. Going for a dpf delete first then ill test to run without the egr for a while and see if it makes a difference.
Is there someone here who runs without EGR?
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