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X3 E83 (2004 - 2010)
Talk about the E83 BMW X3 in this forum!

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  #1  
Old 01-29-2012, 11:13 AM
angina angina is offline
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Replacing Coilpack

My X3 engine shudders when I accelerate, and I am 90% sure its a bad coil pack. I had the same thing happen to me a couple months ago, and it was due to the coil pack. I'm even more sure about this because the car smelled like rotten eggs a couple days ago, and that happens when a coilpack goes bad.

Anyways, the last time it happened, the dealership fixed it but it was way too expensive. I've replaced coilpacks on my old VW, so I know its pretty easy. However, never having done it on the X3, does anyone have a DIY or instructions on how to replace?

Thanks!
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  #2  
Old 01-29-2012, 01:43 PM
brewder brewder is online now
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Quote:
Originally Posted by angina View Post
My X3 engine shudders when I accelerate, and I am 90% sure its a bad coil pack. I had the same thing happen to me a couple months ago, and it was due to the coil pack. I'm even more sure about this because the car smelled like rotten eggs a couple days ago, and that happens when a coilpack goes bad.

Anyways, the last time it happened, the dealership fixed it but it was way too expensive. I've replaced coilpacks on my old VW, so I know its pretty easy. However, never having done it on the X3, does anyone have a DIY or instructions on how to replace?

Thanks!
Help me understand your "shudder"... I think my 2008 has a similar issue. Under "heavy" acceleration, mine feels like it shudders... Most normal city driving you can't feel anything, but heavy acceleration is feels like it's "mis-firing" or something. Curious if this is what you are describing...

The harder part is then figure out which of the 6 coil packs are bad.....
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  #3  
Old 01-30-2012, 09:39 AM
angina angina is offline
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the engine "shudders" when I go above certain RPMs, and it is really bad. I am pretty certain it is the coilpacks, because I had the same issue before.

The coilpacks sell for about $50 online, but to get them replaced at a shop, it costs nearly $200 (with the part). I know the job itself is real easy on most cars, but just not familiar with replacing it on a BMW...
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  #4  
Old 01-30-2012, 09:45 AM
brewder brewder is online now
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Check out this excellent video for the DIY...

http://blog.bavauto.com/10523/diy-vi...o-m54-m62-n62/
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  #5  
Old 01-30-2012, 10:06 AM
angina angina is offline
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Quote:
Originally Posted by brewder View Post
Check out this excellent video for the DIY...

http://blog.bavauto.com/10523/diy-vi...o-m54-m62-n62/
thanks!!!
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  #6  
Old 01-30-2012, 03:05 PM
angina angina is offline
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so does anyone know if it is safe to turn on the engine with a coilpack removed? I don't know exactly which coilpack is bad, so I figured I would remove one, and turn on engine and see if the car shakes/shudders even more. This would help determine if the coil I removed was good. If the one I pulled was in fact already bad, I shouldn't expect the engine to shudder even more than normal.

this is the process I used to test/replace coilpacks on my previous Volkswagen and hoping it would be fine to do on the BMW....
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  #7  
Old 01-30-2012, 03:39 PM
John@SAtlBMW John@SAtlBMW is offline
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if you drive it and try to force the shuddering situation, you should get a SES light come on... check the code and it will tell you which cylinder is misfiring. I'm not sure how the computer will like running with the coil pack unplugged. I wouldn't recommend it.
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  #8  
Old 02-01-2012, 08:07 AM
angina angina is offline
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Quote:
Originally Posted by John@SAtlBMW View Post
if you drive it and try to force the shuddering situation, you should get a SES light come on... check the code and it will tell you which cylinder is misfiring. I'm not sure how the computer will like running with the coil pack unplugged. I wouldn't recommend it.
do you know where I can go to check the code without having to go to a dealership and pay $100 for a "diagnostic" fee?
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  #9  
Old 02-01-2012, 08:31 AM
John@SAtlBMW John@SAtlBMW is offline
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yeah... you can always go buy a hundred dollar code reader!
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  #10  
Old 02-02-2012, 07:01 AM
angina angina is offline
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so i went to autozone, had them look up code, found out it was the first cylinder misfiring, and replaced the coilpack. That was definitely it, as the car drove fine afterwards. However, the "Service Engine Soon" light remained on.... I drove it around and it didn't go away, and then I disconnected the battery, but the light remained on. What gives?

In addition to that, after I disconnected the battery and reconnected it, the "4x4" and "Brake" lights turned on! I had an issue before with the actuator motor, but I had that fixed, and the car drives fine. Why would those lights come back on after disconnecting battery?
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  #11  
Old 02-02-2012, 07:24 AM
brewder brewder is online now
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Quote:
Originally Posted by angina View Post
so i went to autozone, had them look up code, found out it was the first cylinder misfiring, and replaced the coilpack. That was definitely it, as the car drove fine afterwards. However, the "Service Engine Soon" light remained on.... I drove it around and it didn't go away, and then I disconnected the battery, but the light remained on. What gives?

In addition to that, after I disconnected the battery and reconnected it, the "4x4" and "Brake" lights turned on! I had an issue before with the actuator motor, but I had that fixed, and the car drives fine. Why would those lights come back on after disconnecting battery?
Hi - I don't have an answer for you but wanted to ask something to clarify... Was your Service Engine Soon light ON when you asked AutoZone to read the codes??
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  #12  
Old 02-02-2012, 08:13 AM
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icuc icuc is offline
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Quote:
Originally Posted by angina View Post
so i went to autozone, had them look up code, found out it was the first cylinder misfiring, and replaced the coilpack. That was definitely it, as the car drove fine afterwards. However, the "Service Engine Soon" light remained on.... I drove it around and it didn't go away, and then I disconnected the battery, but the light remained on. What gives?

In addition to that, after I disconnected the battery and reconnected it, the "4x4" and "Brake" lights turned on! I had an issue before with the actuator motor, but I had that fixed, and the car drives fine. Why would those lights come back on after disconnecting battery?
Go back to autozone and erase the code. It should have gone when you removed the battery.
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  #13  
Old 02-02-2012, 10:47 AM
angina angina is offline
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Quote:
Originally Posted by icuc View Post
Go back to autozone and erase the code. It should have gone when you removed the battery.
can they erase codes?

Brewder: Yes, the service engine light was on when they scanned it. The light came on when I started having issues with the coilpacks a couple days ago.

Replacing the coil definitely got rid of the shuddering issue, and the car drives fine now. Except I still see the SES light. ignore my comments about the 4x4/brake lights coming on. they went away...
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  #14  
Old 02-02-2012, 11:28 AM
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icuc icuc is offline
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Quote:
Originally Posted by angina View Post
can they erase codes?

Brewder: Yes, the service engine light was on when they scanned it. The light came on when I started having issues with the coilpacks a couple days ago.

Replacing the coil definitely got rid of the shuddering issue, and the car drives fine now. Except I still see the SES light. ignore my comments about the 4x4/brake lights coming on. they went away...
Yes you can delete the code. Just ask them...
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  #15  
Old 02-02-2012, 12:43 PM
angina angina is offline
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Yes you can delete the code. Just ask them...
blah.. they just told me they aren't legally allowed to clear codes... i'll have to find an ODB scan tool myself.
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  #16  
Old 02-02-2012, 12:51 PM
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timfitz63 timfitz63 is offline
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Originally Posted by angina View Post
blah.. they just told me they aren't legally allowed to clear codes...
That's been my experience too...

Often times a latched SES will eventually clear, if the fault has been corrected; it just requires a certain number of engine starts without the fault reoccurring before the computer clears the SES. Try giving it a bit of time...
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  #17  
Old 02-03-2012, 08:28 AM
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blah.. they just told me they aren't legally allowed to clear codes... i'll have to find an ODB scan tool myself.
O'Reilly sales person once told me, how to delete them. Go to a different store to do it.
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  #18  
Old 02-09-2012, 09:15 PM
angina angina is offline
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ok, so after a couple days, the SES light went away! guess i just needed to wait
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  #19  
Old 04-19-2013, 03:47 AM
ncord ncord is offline
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I have same problem with shuddering (misfire) when engine under load @ 3000 rpm.
There was oil in plug #2 so I replaced VCG & plug gasket .new plugs, 2-pre cat.O2 sensors,&
new coil pack in cyl.with oil leak.
I STILL HAVE THE DAMN MISFIRE WHEN I BOOT IT... What Next???
PS; I have never had a Check Engine light . 88K miles
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