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X5 E53 (1999 - 2006)
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  #1  
Old 03-25-2014, 09:44 AM
rdavidrr rdavidrr is offline
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Location: San Diego
 
Join Date: Mar 2014
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Mein Auto: x5 2006 4.4i
dme - 29d3 and 29cc in a 2006 x5 4.4i

2006 BMW x5 4.4i, rough idle no power with SES Light on and codes:
dme - 29d3: Combustion misfires, cylinder 7 - Misfire with cylinder cutout - Fault currently present
dme - 29CC: Combustion misfires, several cylinders.
- Misfire Detection B1214_Misfirex

When I erase the codes the truck idles properly when cold, once that it gets to temperature the codes come back up and it starts to rough idle and no power again. I already changed all spark plugs and moved coil 7 to cyl 5 and code sticks on cyl 7, thanks for the help
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  #2  
Old 03-25-2014, 04:37 PM
rdavidrr rdavidrr is offline
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Location: San Diego
 
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Mein Auto: x5 2006 4.4i
Does this sound like the intermediate levers issue?? (I'm in a warm weather), Any ideas what to check next??

Last edited by rdavidrr; 03-25-2014 at 05:10 PM.
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  #3  
Old 03-26-2014, 09:42 AM
rdavidrr rdavidrr is offline
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Mein Auto: x5 2006 4.4i
Yeah, I know, no one is answering because this is very talked about in multiple threads, but so far I haven't found one with exactly the same situation, and everybody that does find this kind of problem just take it to the dealer... I would want to investigate the issue by my own and then share a write-up here, I do have DIS (that's how I got the codes) but in the procedure for the misfiring n62 (http://prodcds.bmwuniversity.com/lib...0Diagnosis.pdf) it says I need the MKA adapter in order to do some of the tests... So that's why I'm asking for a way to approach this and not necessarily go through each system if someone could narrow it down a bit (I mean the fact that only happens when warm after a while and sticks, I was hoping it would ring a bell to someone here)... Do I have the attention of someone now???

Last edited by rdavidrr; 03-26-2014 at 09:49 AM.
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Old 03-27-2014, 09:17 AM
rdavidrr rdavidrr is offline
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Location: San Diego
 
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Mein Auto: x5 2006 4.4i
So yesterday after work I did a quick check on all the cabling and while doing that found that the bank 2 crankcase vent was leaking, so I went to BMW and got new vents for both banks erased the codes and baaang after a while on idling got the same problem (would have been too easy!! haha) so continued with the checking on DIS and did the intermediate lever check and the VANOS initialization and everything worked fine, then I went to check the Rough running values and DIS displays cyl 7 waaay off, so I think the problem seems to be contained to cyl 7, so my next step will be doing the compression test (on the weekend)...

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Last edited by rdavidrr; 03-27-2014 at 09:22 AM.
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