My car has been running really rough at low speeds and sometimes will even flat out stop at a stop sign or something. I have replaced the Distributor cap a while back because the shop would not trouble shoot my car because it needed a bunch of little stuff done, so I did it.

It is almost like it is misfiring. I checked all plugs and they look nice and clean.

I would appreciate any directions I could be pointed in to figure this out.

Are there any error codes that can be obtained from this year/model ?

__________________
1999 Mercedes ML320
2002 Mercedes 230K