I picked up a 91 Cadillac Sedan De ville from a dealer for 4K (I know a little too high). The gas pedal bounced a lot at starting and it bounced bout 50 times when I shut it off. I bought a idle control motor off Ebay for $18 (otherwise 120 at car parts store or similar). Cured the problem. Just bounces once or twice on start up (I think it just puts a couple squirt of fuel in the carburetor). KEEP the screw (shaft) that comes out your old IDLE motor as you will need it to put on the new one. (this way you won't have to reset you idle. Use good fuel. NOT 87 octane. The transmission fluid was 1 qt low (no leaks anywhere - just never been checked. NICE RIDE - its maroon - I will get it repainted to look like a newer model -its maroon - tan interior.
Your car has multi-point fuel injection.
There's no carburetor.
Do you even know what you are talking about?
Make sure you get the transmission serviced. Have it done right. A rebuild will be very costly if you don't attend to this.