my car idle starts high then calms down help?

bob 100

New member
when i start my car id idles at about 1300rpms then eventually calms down and when i accelerate the rpms go down slowly and seem to stick for a second and go where they should be.
It seems also when i put my car in drive every like 10 seconds or so i see my idle jumping around just a little bit does anyone know what this might be i have a 2000 pontiac grand am gt 3.4 v6 engine
 
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