Left for 6wks on business trip. Wife started the car and let run while I was gone. When I got back there's something wrong.

If I feather the clutch the car will drive normally and get up to speeds of 75+. If I step on the gas to get there quicker the damn thing wants to sputter and rock. Engine won't die but I cant get on it or it starts shaking. Starts every time and had 2 fillups since I've been back now.

What do you think? Fuel Filter, Plugs and wires, no codes are being thrown currently, but I did try to stomp on the gas once and as it was shaking the check engine light came on and then when I let off the gas it disappeared.