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Discussion Starter #1 (Edited)
Hello,

I have a 2001 CLK320, I was driving today and noticed that at some stop lights the car had a rough idle, also it felt like it was sputtering a little. I checked the rpms and it is idling at 500 on the dot, is that a normal idle rpm?

Would a throttle body cleaning remedy this? If so , is it easy to do on these cars?

there is no SES light on either
 

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The normal idle for a benz engine in "D" is 600, so it seems your idle speed is slightly low..... poor gas, even a bad mass could be an issue.

Hope that helps
 

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Discussion Starter #4
thanks for the replies

shouldnt a bad MAF throw a code?

also this is a slightly rough idle, almost hard to notice if not paying attention
 
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