2003 Mercedes-Benz S55 AMG Q&A

2003 Mercedes-Benz S55 AMG Question: Some rough idle in park/ start up

I have a bit of rough idle at start up. I have placed new plugs (Bosch Iridium) car runs fine once it warms up. I have put in cleaner additive, but still rough idle at start up for about 5-mins before it seems to get better. One suggestion was fuel pump sensor???? No diag codes??? Thanks for your time! -
Answer 1
There are some causes of rough idling. You can visit here to see the detailing instruction http://goo.gl/vw97a There tells car rough idle causes and how to fix it clearly. So I'm not repeat here. Good luck and best regards. -