Hello all I finally registered. Any way I have a 90 cad coupe deville 4.5 v-8, when I got in the car today I started her up and let her warm up I realized she was idleing hard and I put her in drive and the whole time my foot was on the gas it was jerking. So I pulled over and cut her off and let her sit for about 5-10 min then started her back up and she ran smooth. That was this morning on the way to my class. So I didn't think nothing of it untill it happen again today but this time I was on my to work. And basicly the same thing happened. And I did the same thing. I'm still at work but on break. If anyone has any idea what the problem may be and how to fix it I'd really appreciate it.