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E-Class (W211) 2003-2009

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Old 01-04-2012, 09:42 AM   #1
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Drives: 2003 e500 sport
check engine and misfires

I'm getting an intermittent idle stumble, as well as missing when driving. When the issue happens the check engine light blinks, and then stays lit.

I've pulled the codes and each of the times (3) it shows misfire for cylinders 5 & 6. Do they share any components or connectors? I haven't really dug into it yet and will pull the sparkplugs tonight to see if there are any differences.

I'm hoping they share a coil or something that I can easily replace without having to go to the stealership.
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93 e400 AMG sold
95 e320 sold
98 e430 sold

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2003 e500, upgraded to navigation and euro dvd large screen
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Old 01-04-2012, 02:50 PM   #2
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Hmmm 178 views and no responses.... interesting.
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93 e400 AMG sold
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Old 01-05-2012, 09:14 AM   #3
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Quote:
Originally Posted by pcar928sg View Post
I'm getting an intermittent idle stumble, as well as missing when driving. When the issue happens the check engine light blinks, and then stays lit.

I've pulled the codes and each of the times (3) it shows misfire for cylinders 5 & 6. Do they share any components or connectors? I haven't really dug into it yet and will pull the sparkplugs tonight to see if there are any differences.

I'm hoping they share a coil or something that I can easily replace without having to go to the stealership.
Consider moving coil 5 and 6 to 3 and 4. Then run the engine see if the problem moves. If it does it is probably the coil.

If it doesn't move change the plugs. If this doesn't clear the miss you may have a bad head gasked if 5&6 are twin cylinders. I dont' remember the exact cylinder positions.
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Old 01-06-2012, 11:42 AM   #4
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I have had mis fires on my 06 e350, each time code reader showed misfire in x cylinder. Knowing that I recently changed all plugs it pretty much eliminated that as being a problem in my case. Both misfires that I had we due to coils going bad.
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Old 01-06-2012, 08:06 PM   #5
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Originally Posted by gdinerio View Post
I have had mis fires on my 06 e350, each time code reader showed misfire in x cylinder. Knowing that I recently changed all plugs it pretty much eliminated that as being a problem in my case. Both misfires that I had we due to coils going bad.
I agree but moving the coil and runing the codes again will prove the coil and not the plug or wire. Could also be the PCM problem. Since coils are $$ I like to prove the part bad before buying when possible.
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Old 01-06-2012, 08:06 PM
 
 
 
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00, 2003, check, cylinder, e320, e500, engine, flashing, light, mercedes, misfire, misfiring, missfire, multiple, stumbling, w211



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