Cadillac Repair: 94 Seville STS Northstar, seville sts, electrical schematics

Question
What are some of the reasons, or ways to find out why it surges when at idle or driving.  It goes from the under 1 on the gauge up to the 1 1/2 rpms.  It also sometimes stalls when it does this.  It does feel as if there is a slight pedal depression on it's own when this happens on the gas pedal.  Any ideas would be great.  Thanks!

Answer
Most likely a carbon buildup within the throttle bore and throttle plate area. You will need, If necessary, Electrical schematics and picture locations of the components within the system that is causing you problems of which can't be done on this website which only allows one picture.  I do not have a website so you will have to e-mail: onlineautohelp@msn.com in order to obtain the information.