[xeroxed]

So i have a 2001 coupe with 175,000 km on it. Two days ago the car started shaking while idling, the shaking goes down when i put it into park - but if i have the brake on and its in D - the car shakes and wants to move forward... this sometimes happens when the engine is cold and sometimes when its warm .. off and on ... also, theres a weird coughing noise coming from the exhaust when this is happening. The engine is idling but the revs jump from 700-1100 every couple of seconds..... now i did some research... could this be spark plugs and wires?