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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 07-19-2014, 02:09 PM
LALALANY LALALANY is offline
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Location: Piermont
 
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Mein Auto: 328xi
Red face Check Engine soon and rough idle at red lights

Hi everyone. I am new to this forum but hoping someone can shed some light on this for me. I have a 2007 328xi (auto) with 78k. The "Check Engine" light came on today as I pulled out of the driveway. When stopping at a red light close by the car began to idle pretty intensely. It seemed to dissipate as I continued to drive but obviously something is not right. Any thoughts on what this could be? It's Saturday and unlikely will be able to get it looked at by a mechanic. Thanks
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  #2  
Old 07-19-2014, 02:58 PM
TimothyC TimothyC is offline
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Location: Dayton, Ohio
 
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Mein Auto: 2011 BMW 328i
Check coil packs and spark plugs would be my starting point


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  #3  
Old 07-19-2014, 03:16 PM
sunny5280 sunny5280 is offline
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Quote:
Originally Posted by TimothyC View Post
Check coil packs and spark plugs would be my starting point
Having the codes read would be mine.
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Old 07-19-2014, 04:00 PM
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floydarogers floydarogers is offline
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Location: Renton, WA
 
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Mein Auto: 335d, 328d, Toyota T100
Quote:
Originally Posted by sunny5280 View Post
Having the codes read would be mine.
Indeed. ++ As many of us have said before, there are hundreds of things that could be wrong, and the only way to decide what the problem is is to read the codes.

Could be an injector, could be coil, could be plug. But it could be 100 other things, too.
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Old 07-19-2014, 04:55 PM
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galahad05 galahad05 is offline
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Mein Auto: 335i sedan 6MT
That brings up the bigger point. I think that anyone who drives one of these BMWs and plans on even remotely fixing things on their own--or even just want to see if the dealer is screwing with them--should have in their toolkit a BMW-aware OBD reader.
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Old 07-19-2014, 05:49 PM
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floydarogers floydarogers is offline
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Location: Renton, WA
 
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Mein Auto: 335d, 328d, Toyota T100
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Originally Posted by galahad05 View Post
That brings up the bigger point. I think that anyone who drives one of these BMWs and plans on even remotely fixing things on their own--or even just want to see if the dealer is screwing with them--should have in their toolkit a BMW-aware OBD reader.
Yeah, I'm buying a BavTech reader as soon as they add 335d to it.
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  #7  
Old 07-19-2014, 05:57 PM
sptt144 sptt144 is offline
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I only have a $30.00 OBDII bluetooth reader (and Torque App) and when my car started misfiring, it showed cylinder #3 misfire. I took off the engine cover and saw there was oil going into 3 and 4 from the valve cover leaking. Took it to dealer and they replaced the valve cover and put a new plug and coil into #3 and cleaned up #4. Pulls like an OX now.

My Dad has a Ford Expedition and it started stumbling and losing power recently. Plugged in my BT reader and pulled a #4 misfire. Bought him a coil at Autozone, popped it in (well, not that easy I must say) and voila!

Get yourself something if you don't want to lay out a couple hundred bucks for the BMW cable. At least you'll have an idea right away vs. guessing.
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  #8  
Old 07-19-2014, 09:29 PM
LALALANY LALALANY is offline
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Thanks for your opinions. This really helps. Where can I get a OBD reader?
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  #9  
Old 07-19-2014, 09:44 PM
sptt144 sptt144 is offline
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Location: Orange County, Ca.
 
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Originally Posted by LALALANY View Post
Thanks for your opinions. This really helps. Where can I get a OBD reader?
http://www.amazon.com/ELM-Bluetooth-.../dp/B0076KBPNI
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Old 07-20-2014, 09:16 AM
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need4speed need4speed is offline
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Mein Auto: 09 335Cabrio zsp/11 335d
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Originally Posted by timothyc View Post
check coil packs and spark plugs would be my starting point


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+1
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  #11  
Old 07-20-2014, 12:04 PM
LALALANY LALALANY is offline
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Location: Piermont
 
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Mein Auto: 328xi
I just want to add one last thing. I had the car inspected last Monday at a local shop. Is it possible the emissions components were checked and not put back properly? I also noticed some residue/fluid on the engine cover.
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