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Old 09-28-2009, 11:46 PM   #1
jmack
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Join Date: Mar 2009
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need help troubleshooting engine issue

Hi folks,

I haven't posted in a while been very busy putting 13k on my 540i/6 M sport since April when I got it Other than the issue below the car has performed like a champ and nothing has gone terribly wrong (YET) let's see where this little issue leads...

Anyways I have noticed this issue from the start.. it only occurs under hard acceleration - and only if you have the pedal on the floor. The engine once it gets above 3-4k rpm with the pedal down loses power intermittently, in any gear but most noticeably in 2,3,4. I don't think it's tranny related as it engine basically bogs down. It doesn't make terrible noises or buck or anything like that. Yes the CEL is on but supposedly from the last time I pulled the codes it was related to build up in the EGR tube.

Any other time the engine runs fine.. I suppose I would need to get the codes pulled to see if there is anything there. One guy suggested bad coils and plugs.. but I replaced the plugs soon after I got the car.

Any ideas? Did lots of searching on the net but couldn't find anything. I would really like to see someone confirm this issue before I start replacing things that don't need to be replaced. But it's a 540 so..

I am also moving up north where I can only use a 4x4 to get around so it will be parked for the winter... and spring it looks like. Once spring rolls around I will be doing more maintenance work but would like to get a handle on this engine issue.
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Old 09-29-2009, 08:09 AM   #2
MANDD
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Get the current fault codes and post, also get the MASS air readings voltage and flow.

Mark.
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Old 09-29-2009, 08:33 AM   #3
chromius
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^^Agreed. Get the fault codes and post back. A new one could have come up since the last time.

Off the top of my head though, Possibilities could be MAF or Vanos.
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Old 09-29-2009, 09:50 AM   #4
carjoe
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If it is the MAF, I got a quote for $200 shipped to my door from EACtuning...
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Old 09-29-2009, 10:12 AM   #5
chromius
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Originally Posted by carjoe View Post
If it is the MAF, I got a quote for $200 shipped to my door from EACtuning...
How come you didn't go with getcoolparts?
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Old 09-29-2009, 11:11 AM   #6
carjoe
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I actually haven't ordered anything yet. BlownM3 might have one for me.

Speaking of Getcoolparts, I guess I gotta call to get it shipped? I couldn't pick Canada in the shipping checkout. I have a US address to take advantage of the free US shipping but it's still $40 to get it to me here... A wash if EAC can ship it to me for $200 all in.
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Old 09-29-2009, 11:13 AM   #7
chromius
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Originally Posted by carjoe View Post
I actually haven't ordered anything yet. BlownM3 might have one for me.

Speaking of Getcoolparts, I guess I gotta call to get it shipped? I couldn't pick Canada in the shipping checkout. I have a US address to take advantage of the free US shipping but it's still $40 to get it to me here... A wash if EAC can ship it to me for $200 all in.
Yeah, you can just call them if you want to get it shipped directly. Their shipping is cheap to Canada. Or just ship it to the ups store in Ogdensburg. That will only cost 5 bucks, plus 10 bucks in gas.
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