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rough idling on 01 ML320

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Old Sep 5, 2006 | 09:35 AM
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fizzle
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From: Wayne, New Jersey
09 ML320, 07 BMW 335i, 03 SL500
rough idling on 01 ML320
I have an 01 ML320, with 103K miles, and unfortunately, I dont think the plug have ever been changed. So I am doing that this upcoming weekend, but was wondering if this will cure a rough idle, only while in Drive, not in Neutral. Also I am wondering exactly what tools I will need to change the plugs? I usually just use a spark plug 5/8 socket and thats it. I plan to use SeaFoam as well.
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Old Sep 5, 2006 | 10:52 AM
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2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Could be caused by plugs and/or wires.
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Old Sep 6, 2006 | 09:30 AM
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09 ML320, 07 BMW 335i, 03 SL500
thats what i was thinking but i just wanted to make sure it wasnt anything else, like a sensor or some other electrical problem.
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Old Sep 14, 2006 | 10:09 AM
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would the MAF sensor cause this?
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Old Sep 14, 2006 | 10:58 AM
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Originally Posted by fizzle
would the MAF sensor cause this?
Unlikely. Whay don't you just spend a few dollars and have it diagnosed correctly.
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Old Sep 14, 2006 | 03:33 PM
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good luck with the plugs if its there first change since new! definatley will not help matters. little tip: if u can put the front on axle stands and remove the wheels then the wheel arch linings the plugs are right behind them! easy!
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Old Sep 14, 2006 | 04:08 PM
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Originally Posted by sosh
Unlikely. Whay don't you just spend a few dollars and have it diagnosed correctly.
i will if its not the plugs...figured i post a question and ask first maybe someone else has the same problem. but thanks for your knowledgable advice.
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Old Sep 22, 2006 | 08:56 PM
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2000 ML 320, 2003 CBR600F4i, 99 Eclipse GSX
Do the spark plugs and see where you are at. ML's are notorious for having bad ignition coils/wires. They are also not cheap. Also note I have seen perfectly good non-mb wires/coils turn on a check engine light for a misfire.
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