[dobbo99]

Mine needs it's 4th, waiting for BMW to come back to me on a goodwill replacement as the 3rd one hasn't even lasted a year.

I'm wondering if spending money on this terraclean process might help in the long run

[Smee]

Is there not a egr delete for a n57?

[Nyxea]

Originally Posted by Phoenixcat

After an afternoon of fiddling I got ISTA to work and downloaded the fault codes, there are quite a few! 3 of them relate to the EGR valve so that seems to be the culprit.
I also get the occasional battery error and my stop-start hardly ever works so I wonder if these issues are related to the under voltage errors.

How did you get on with this? I have similar codes logged:

255C00 EGR Valve, position control: Valve open too wide

[Phoenixcat]

Originally Posted by Nyxea

How did you get on with this? I have similar codes logged:

255C00 EGR Valve, position control: Valve open too wide

Took it to BMW in the end and they did it for £350. I have ISTA now with the manual and the job is really easy so if it happens again I will have a crack at it myself.

[Jus71n]

I fitted my own, took an hour. Managed to get the new EGR for £155

[ushafiq]

Any DIY guide for EGR replacement?

[Jus71n]

Didn't find a guide, fairly simple though, hardest part is the tiny rear water hose attached to it!

[brtttt]

Originally Posted by Phoenixcat

Took it to BMW in the end and they did it for £350. I have ISTA now with the manual and the job is really easy so if it happens again I will have a crack at it myself.

Do you have any links please for Working version of ISTA.

Could do with finding out if I have faults since the drive change fault has shown its ugly face.

Thanks

[alex-xs]

Originally Posted by Jus71n

I fitted my own, took an hour. Managed to get the new EGR for £155

and did you also perform a reset of the egr valve adaptation?
because in ISTA it is not possible for F series, at least not in the diesel electronics section?

I want to replace it also

[xpro]

Looking at the codes, looks like egr is sporadically in the open position. Most likely due to a carbon build up. You can try taking it out and cleaning it.

The procedure in ista is when you repair/replace the egr to activate it open and then fit it, so that way it will sit it normally.

Other then that, you can fully disconnect it and go for a drive, ( providing the egr isnt stuck open) and see how it drives. You will have the engine light on, bit it wont effect the driving performance.

[alex-xs]

Originally Posted by xpro

Looking at the codes, looks like egr is sporadically in the open position. Most likely due to a carbon build up. You can try taking it out and cleaning it.

The procedure in ista is when you repair/replace the egr to activate it open and then fit it, so that way it will sit it normally.

Other then that, you can fully disconnect it and go for a drive, ( providing the egr isnt stuck open) and see how it drives. You will have the engine light on, bit it wont effect the driving performance.

I have twice a year the same errors, saw the replace manual on ista, connect before fit will do the job, it will retract the postion a bit.
I ordered the clamps, will try to clean it first

couldn't find the reset adaptation thing in ista anyway....

[xpro]

Originally Posted by alex-xs

I have twice a year the same errors, saw the replace manual on ista, connect before fit will do the job, it will retract the postion a bit.
I ordered the clamps, will try to clean it first

couldn't find the reset adaptation thing in ista anyway....

Ista, service column I think l, select engine, adaptations and there you will find Egr reset option

[alex-xs]

Originally Posted by xpro

Ista, service column I think l, select engine, adaptations and there you will find Egr reset option

will have a look today, should it be done before starting the engine?

[xpro]

Originally Posted by alex-xs

will have a look today, should it be done before starting the engine?

yes, ignition on and then reset

[alex-xs]

many thanks,
found in ISTA how to reset, and it has to be done before fitting the new EGR valve

[seenthelight!]

Blank it off, code it out 😉

[Kal101]

Originally Posted by Phoenixcat

After an afternoon of fiddling I got ISTA to work and downloaded the fault codes, there are quite a few! 3 of them relate to the EGR valve so that seems to be the culprit.
I also get the occasional battery error and my stop-start hardly ever works so I wonder if these issues are related to the under voltage errors.

Get yourself a C tek charger and run it in recon mode. Did that to mine and sorted out all the battery charging issues etc.

Car seems to run smoother but that may just be placebo.

[stabri]

Originally Posted by xpro

Looking at the codes, looks like egr is sporadically in the open position. Most likely due to a carbon build up. You can try taking it out and cleaning it.

The procedure in ista is when you repair/replace the egr to activate it open and then fit it, so that way it will sit it normally.

Other then that, you can fully disconnect it and go for a drive, ( providing the egr isnt stuck open) and see how it drives. You will have the engine light on, bit it wont effect the driving performance.

You mention "providing the egr isn't stuck open" - would that stop the car from driving? Just wondering because I think my EGR (B57 in a 520d) is stuck open and it stalls just after cranking.

[Eddamoo]

Someone recently uploaded a YouTube video doing this job. Not hugely detailed but I'm sure it will help somewhat:

[B1ue52]

Originally Posted by Phoenixcat

After an afternoon of fiddling I got ISTA to work and downloaded the fault codes, there are quite a few! 3 of them relate to the EGR valve so that seems to be the culprit.
I also get the occasional battery error and my stop-start hardly ever works so I wonder if these issues are related to the under voltage errors.

Stop start will stop working if your battery isn't above a certain charge level or can't maintain a certain charge level. Dealers usually put it on a slow trickle charge to try to get it to charge fully before replacing it, so try that for your battery/stop start issue

I run Wynns EGR cleaner through my air intake every time I change my oil. Takes all of 5 mins and also whack some of their DPF cleaner in the fuel every now and then. Same with their fuel system cleaner and their turbo cleaner. Probs a waste of time but makes me feel better :

[MetzgerMeister]

Originally Posted by B1ue52

Stop start will stop working if your battery isn't above a certain charge level or can't maintain a certain charge level. Dealers usually put it on a slow trickle charge to try to get it to charge fully before replacing it, so try that for your battery/stop start issue

I run Wynns EGR cleaner through my air intake every time I change my oil. Takes all of 5 mins and also whack some of their DPF cleaner in the fuel every now and then. Same with their fuel system cleaner and their turbo cleaner. Probs a waste of time but makes me feel better :

What steps are involved in the wynns EGR cleaner? Do you remove/loosen the air filter cover, remove the filter and spray it in there with the engine warm and running? N57 330d is what I’ll be doing it on.

[Watsey]

Originally Posted by MetzgerMeister

What steps are involved in the wynns EGR cleaner? Do you remove/loosen the air filter cover, remove the filter and spray it in there with the engine warm and running? N57 330d is what I’ll be doing it on.

Really, don't waste your time or money.

I tried it on mine. 2 cans. Zero effect.

The only way to clean the inlet manifold is to have it removed and then preferably have it soaked in a chemical or ultrasonic bath.

Get the inlet ports walnut blasted at the same time if they need doing.