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  #11571  
Old 11-27-2019, 10:45 PM
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Had the X stumble HARD while into it like it was thrown into 1st gear and then show MAF with 2.9cfm....

Ran a little rough so unplugged MAF and it idles fine but gives moving misfire under acceleration cylinder 4, 1, 3, 7 but never at the same time. With MAF back in it runs without misfires but only if driving like Miss Daisy. Hopefully my spare MAF will cure it but let's be honest... when is anything simple these days

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  #11572  
Old 11-27-2019, 11:05 PM
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Quote:
Originally Posted by EODguy View Post
Had the X stumble HARD while into it like it was thrown into 1st gear and then show MAF with 2.9cfm....

Ran a little rough so unplugged MAF and it idles fine but gives moving misfire under acceleration cylinder 4, 1, 3, 7 but never at the same time. With MAF back in it runs without misfires but only if driving like Miss Daisy. Hopefully my spare MAF will cure it but let's be honest... when is anything simple these days

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This sounds like the exact problem I’m having. See: https://xoutpost.com/bmw-sav-forums/...f-plugged.html

It’s not the MAF. Still need to experiment next week, but I’m 90% sure it’s a bad VANOS solenoid.
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  #11573  
Old 11-29-2019, 01:12 AM
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Swap the vanos solinoid see if the fault follows
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  #11574  
Old 11-29-2019, 01:16 AM
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I had this happen:



My lock cylinder decided it would keep my key in the lock position. A broken part fell between two moving parts and jammed the key

I knew my lock cylinder was due for replacement guys so I had the kit in my glove box for when the cylinder finally died.
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  #11575  
Old 11-29-2019, 01:39 AM
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Quote:
Originally Posted by andrewwynn View Post
I had this happen:



My lock cylinder decided it would keep my key in the lock position. A broken part fell between two moving parts and jammed the key

I knew my lock cylinder was due for replacement guys so I had the kit in my glove box for when the cylinder finally died.


What is “the kit in my glove box” part? I think I may need one of those as my X is aging and keyless has stopped working. We have to use the key to lock or unlock every use and it is daily driven


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  #11576  
Old 11-29-2019, 01:49 AM
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What did you do to / for your E53 today??

The key stops working when the solder traces fail inside. I revived both of my keys by reflowing the solder.

A-Premium Door Lock Repair Kit... https://www.amazon.com/dp/B01MQQQE80...p_mob_ap_share
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Last edited by andrewwynn; 11-29-2019 at 09:41 AM.
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  #11577  
Old 11-29-2019, 01:51 AM
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Quote:
Originally Posted by andrewwynn View Post
The key stops working when the solder traces fail inside. I revived both of my keys by reflowing the solder.


Can you link a thread about this? I have never heard of this problem


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  #11578  
Old 11-29-2019, 09:47 AM
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Quote:
Originally Posted by andrewwynn View Post
Swap the vanos solinoid see if the fault follows

Yep that's the plan. Hoping to have time to experiment with it some more next week/weekend.

In the meantime, unplugging the MAF -OR- any of the VANOS solenoids sets it back to stored parameters and it run normal (well normal enough).
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  #11579  
Old 11-29-2019, 09:53 AM
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What did you do to / for your E53 today??

Quote:
Originally Posted by bhennrich View Post
Can you link a thread about this? I have never heard of this problem


I've posted about this any time somebody mentions that they think their key battery has failed (spoiler alert it's never the battery).

https://www.icloud.com/sharedalbum/#B0S5kuVsbYSr6d
My album from when I fixed mine

https://www.themasterlocksmith.com/p...mw-key-repair/

Here is an example service to repair a wonky key.
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  #11580  
Old 11-29-2019, 12:26 PM
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Quote:
Originally Posted by andrewwynn View Post
I've posted about this any time somebody mentions that they think their key battery has failed (spoiler alert it's never the battery).

https://www.icloud.com/sharedalbum/#B0S5kuVsbYSr6d
My album from when I fixed mine

https://www.themasterlocksmith.com/p...mw-key-repair/

Here is an example service to repair a wonky key.
It's almost never the battery. But if you are in there with the soldering iron... change it anyway.
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