help! my car's RPM keeps droppin

[danny Perez]

idk why but my car RPM keeps down dangerously low and sometimes it will stay dangerously high... it drops a little below 1000rpm and sometimes goes as high as 2000rpm =[ i dont know why?
please help?
the pistons are runnin fine..

[los_inc]

seafoam your IACV
-los