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#1
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W210 Rough Idle
Hi, Folks,
I have a 2002 E320 with 68,000 miles on the clock. Last year, I began to notice a roughness or miss while idling on rainy days. The shop checked it over and couldn't find a reason for the condition. The problem just went away once the weather cooled off last fall. Well, now it's back. Does anyone have a suggestion as to how to address this problem? There are no fault codes showing on my meter. Should I be concerned, or should I just consider this to be an idiosyncracy of this particular vehicle? Thanks for your help. |
#2
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I replace lots of ignition wires on M112/113 powered MB's with over 40,000 miles. The good news is that they run like new afterward. The bad news is that the wires aren't cheap.
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#3
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my guess is your MAF might be on its way out. try cleaning it or replace it next time u get new air filters
__________________
Current cars: 2001 MB E55 AMG 2003 Honda S2000 2000 Honda CRV Gone but not forgotten: 2004 BMW 325i 5sp sport 1999 BMW 540i sport 1997 MB E420 1995 BMW M3 coupe |
#4
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Rainy weather could be
causing an arc from a plug wire to a ground. When air is moist, it becomes more of a conductor. Put car in a dark garage and run engine while idling roughly. Look for arcing off of plug wire.
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#5
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Followup......
Hi, Folks,
the rough idle turned out to be a miss on the #6 cylinder. My Indi, World Foreign Car in Richmond VA, replaced both spark plug wires and everything is fine. Thanks for your help. Steve |
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