1999 Maxima SE shaking at start

[srv1ec2]

Hi all,I have a 1999 Maxima that is shaking very bad when I start the car. A year ago I received codes that indicated problems with ignition coils and a knock sensor. The care ran fine 99% of the time with a few issues with the car misfiring and bucking while driving. I eventually replaced all 6 coil packs and the car ran just fine until this week. Throughout this time, the check engine light has been on. I read the codes and cleared it a few times only to have it come up the next morning. Each time, the codes mentioned the knock sensor and the ignition coils(eventhough I replaced them). Now the car feels like it is going to stall. Would the knock sensor cause this problem? I only run 93 octane in it. What else could it be? Does anyone else have similar issues? Any suggestions would be very helpful. Thanks.Sean

[NutriaforBreakfast]

Try cleaning the Idle Air Control Valve and Throttle Body

[mrdicks95se]

replace that ks. also check your plugs to make sure they are firing. replace those if necessary as well. how bad is the "stalling"?