turns out it was a bad coil she starts now not very easily but consistanly now wenever i rev it it falls flat on its face and dies what could that be? this mechanic was a total retard thats what i get for trusting a craigslist mechanic with my benz. the transmission also isnt working either and is leaking all over the place but he says thats not his fault it never leaked when he was there typical crappy mechanic can never take blame for his **** up

Poor cold starting and instant dying when you lift off the throttle when the engine is cold is probably a fueling issue. Our W124 did that once and it was a lack of cold start valve fuel injection - in our case, due to a failed OVP relay. It can be checked by loosening the injector and its pipework so that you can squirt it into an empty pop bottle (the translucent plastic type) while the engine cranks over.