Hi Everyone!
This is my first posting in this forum, and I just want to say how great this forum is. I am a regular reader on the benzworld W163 forums, its great too but I would like to see more how-tos, much like those found here!

I have a problem that I would like some advice on. I changed out my spark plugs using the DIYs available, and i believe I did it pretty well considering the mechanical idiot that I am. However, I have found that my 2001 ML320 is starting to shudder rather hard during idling, especially if I idle for more than a couple of minutes. This happens whether or not the engine is cold, and I have noticed that the idling rpm is hovering just around what I estimated to be 600rpm. Any ideas? I have taken out the spark plugs again to make sure that the boots are tight, and used antiseize and spark plug dielectric grease during my DIY. I am thinking that the following might need some looking at, ignition wires or, the throttle control in the engine bay (dont know what this is called in tech-speak)

Any advice or comments will be greatly appreciated!!!


***BTW Phil, I am the guy who called you last week about the brakes and rotors and I have to say that you exhibit excellent customer service to even a non-customer (you dont ship to canada). The day you do will be the day many of us canadian owners will be calling you for parts!!! Please do reconsider!!!