I own a 1990 Mercedes Benz 190E and I'm having some mechanical problems. The car seems to have a stalling problem, if it is driven constantly it doesn't seem to have any issues but if it isn't driven at least once a day it tends to stall once it begins to idle. It will start fine and accelerate fine but as soon as I slow down, say for a traffic signal or stop sign it will start to sputter and if I do not immediately begin to accelerate again it will stall. I recently went out if town and it sat for almost 2 days and now I can't even get it to turn over and start. Any ideas or suggestions? I'd appreciate any help and advice.