06-12-2020, 09:25 AM | #1 |
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After change chain tensioner - Drivetrain Malfunction
2013 X3 N20 28i
Today I changed Chain tensioner as preventative maintenance, but soon I start the car, I got Drivetrain Malfunction. When I read the code through ISTA, these codes are code:131501 VANOS, intake, cold start: not controllable code:131401 VANOS, exhaust, cold start: not controllable code:130104 VANOS, intake, control fault, camshaft jammed based on codes, I believed that timing is incorrect/out. Need to do timing, if it's timing than does anyone know do I have to remove oil pan/ remove the subframe as well or just fix this by opening the engine valve cover and use the chain time tool? or plz guide me in the right direction if it relates to something else, as I only replaced the chain tensioner only follow this instruction https://www.newtis.info/tisv2/a/en/f...shaft/HtiBPV3K I also find this SIB https://static.nhtsa.gov/odi/tsbs/20...53485-8362.pdf based on that its just the DME software update. Not sure what to do. Last edited by neosez; 06-12-2020 at 01:43 PM.. |
04-01-2021, 10:40 AM | #2 |
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car sold
Last edited by bhkj9999; 06-06-2021 at 05:51 PM.. Reason: car sold |
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04-12-2021, 04:12 AM | #3 | |
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It cannot be timing. Timing is performed by the timing chain. You only touched an accessories belt part. Look into loose connectors.
Just looked at TIS. The only thing it mentions is to observe the direction of travel of the belt if reuse. It does not mention locking any accessories or pulleys in place while replacing the belt. I believe something else is happening in your case. Also look into Removing and installing/replacing hydraulic valve (N55). This was under the acc belt repair replace section on TIS Quote:
Last edited by MSport_Jon; 04-12-2021 at 04:46 AM.. |
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05-28-2022, 02:10 PM | #5 |
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11-24-2022, 07:24 AM | #7 |
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Sorry for massively late reply - I use the F30/E90 forums usually. Yes I solved this. The exhaust cam had jumped one tooth when changing the tensioner. I managed to replicate this with the valve cover removed.
So a warning to anyone thinking of doing this without the valve cover removed (and preferably an extra pair of hands to keep tension on the chain) as it can happen. I would say that this is not for the average DIYer but is doable if you've got the knowledge, tools, time and inclination. The fix is to correct the timing with the special tools specific to the N20/N26 engine. |
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12-11-2022, 05:48 PM | #8 |
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Previous posts of “timing chain upgrade” explains my experience.
I agree, you need to remove the VC and lock the cams. Still a pretty straight forward job, and hopefully will prevent the chain to jump. Good luck to those that proceed with the project. Ivan. |
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01-09-2023, 01:31 PM | #10 |
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It is possible without the timing tools, but if you risk needing to re-time the engine if something moves. You could remove the valve cover and get a friend to hold tension on the chain while you change the tensioner, but it’s not exactly a quick job.
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11-24-2023, 08:34 AM | #11 |
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Hello all. My chain has also jumped and I did buy the alignment tool and about to tackle this job. Once I have the valve cover off, finding top dead center, locking in the pin, When I go to align the cams, are you able to lift the chain off the intake cam to move it into position with the mark facing up, or do you have to undo the vanos in order to move the cam into its proper position? Thanks. I have an N55 engine.
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