hi, my '96 c180 auto shakes a little bit when im parked up, the reves seem to be sitting around 600-700rpm. is the idle speed too low which is causing the car to shake? any help would be magic!
the idle speed is 600rpm when warm but still feels like its running a bit rough and it could even cut out??
and i opened the bonnet and had a good look around. i cant see anything that could cause a problem. the engine itself does move ever so slightly when i tried to move it around looking for give on the engine mounts.
the mileage is just over 80k so surely it cant be something serious?