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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > 335d injector Number 4 adaptation issue.



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      06-17-2020, 05:08 PM   #1
Boyd122
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335d injector Number 4 adaptation issue.

Keep having this issue with injector number 4 but still no answer to why it happens. Replaced injector 4 about 20,000 miles ago first time to my knowledge and relearned it with protool by BG and kept getting adapt issues which threw the SEL every 40 or so miles after reset. I've updated the dme with ista which took my tune off the car. Currently have a dudmd stage 2 tune. I'm not on my 3rd injector change for number 4 and can't seem to find why it's doing this. I asked dudmd if it's because of the tune and bmws safety for when you delete the car. They replied with the tune not being a issue.
Code is 4B06

If anyone knows what too do that would be great. Wondering if a JR tune would be better even though dudmd has been good.
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      06-17-2020, 08:23 PM   #2
e90Noobie
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You programmed the new injector's code to the car with protool right?
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      06-17-2020, 08:23 PM   #3
Boyd122
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Quote:
Originally Posted by e90Noobie View Post
You programmed the new injector's code to the car with protool right?
Yes, lol. You have too.
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      06-17-2020, 09:20 PM   #4
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Quote:
Originally Posted by Boyd122 View Post
Yes, lol. You have too.
Don't necessarily have to, but it's recommended.
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      06-17-2020, 09:57 PM   #5
Boyd122
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Quote:
Originally Posted by e90Noobie View Post
Quote:
Originally Posted by Boyd122 View Post
Yes, lol. You have too.
Don't necessarily have to, but it's recommended.
I have a few ideas, though don't have anyone near who can do a walnut blast, but I think the carbon build up is pretty bad on the valves, I once had a code for smooth running on two but it went away. So it may be a issue, if not maybe the harness but I'm doubting that as the car runs fine and doesn't shudder at all...
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      06-20-2020, 05:09 AM   #6
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How much is the fuel quantity correction on injector number 4?
You can do al 6 injector test with the diagno tool
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      06-20-2020, 09:53 AM   #7
Boyd122
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Quote:
Originally Posted by Drews2k View Post
How much is the fuel quantity correction on injector number 4?
You can do al 6 injector test with the diagno tool
Don't know yet, every time I connect to ista p tries to update my dme back to factory settings, my Maximus scantool won't do the test so I am not sure yet. I believe I may have bad build up on that cylinder so my liqui moly Distrib is hooking me up with diesel intake cleaner Monday with two cans. So if it continues we shall see.
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      06-20-2020, 02:58 PM   #8
335dlci
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Quote:
Originally Posted by Boyd122 View Post
Don't know yet, every time I connect to ista p tries to update my dme back to factory settings, my Maximus scantool won't do the test so I am not sure yet. I believe I may have bad build up on that cylinder so my liqui moly Distrib is hooking me up with diesel intake cleaner Monday with two cans. So if it continues we shall see.
What test are you doing with the maxipad? What are tou trying to do putting the "dme" back to factory settings? What is diesel intake cleaner? A lot of the stuff you are posting is making no sense.
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      06-23-2020, 01:36 AM   #9
Boyd122
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Quote:
Originally Posted by 335dlci View Post
Quote:
Originally Posted by Boyd122 View Post
Don't know yet, every time I connect to ista p tries to update my dme back to factory settings, my Maximus scantool won't do the test so I am not sure yet. I believe I may have bad build up on that cylinder so my liqui moly Distrib is hooking me up with diesel intake cleaner Monday with two cans. So if it continues we shall see.
What test are you doing with the maxipad? What are tou trying to do putting the "dme" back to factory settings? What is diesel intake cleaner? A lot of the stuff you are posting is making no sense.

I work on bigger diesels, est: 19 years ago or so. Anyway, BMW isn't like duramax or cummins engines for when you delete, I've noticed tuners have to trick the dme and don't do full deletes like what you can with cummins or duramax because they have off-road files or people who are pretty knowledgeable on making a new file for the ecm for a delete tune. Anyway I've been reading there is a factory update for the dme on the 335d to fix a injector bug for mass adaptation which i did. and fixed. Then got my tuner to do a reflash to trick the dme for the "delete" ( I could be wrong about the whole delete situation with bmw diesels so take that with a grain of salt or so)
Anyway. Also, liqui moly sells a intake cleaner for diesel and gas engines for people who don't want to exactly do a walnut blast or power wash the inside of there intake manifold just yet. So I am waiting for that to arrive so I can two cans of it and change the oil. Hope this is more organized as I just type and hope people can bear with me. Just caught what you meant by maxipad, look up Matco Maximus Scantool. Very good scantool.
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