Benz decided to take a crap on me this morning

Hey hey,

Anyone care to take a stab at this,please?
The 88 300e decided it would take a crap this morning I guess. I do the same thing every morning, I go out about 10 minute-15 minutes before I leave for work and start the car. Well this morning is the 1st cold morning we have had below 30 degrees. I start it as usual no problem. It idles fine in gear. If I rev it though it stumbles some. Come back out and hop in the car and it starts stumbling really bad even died. Started back up but had to crank it for 10 seconds before it fired up. I tried again and it stumbled, spit, and sputtered. If I let off the gas it would kind of go back to normal but if I gave it gas it started back stumbling. Did that around the block barely running, brought it home and drove the explorer to work. The temp when I got in the car was right at 80c. So it was warmed up it seems. Any clues on where to start when I get home??????? Never has done this before.

THANKS