1990 Celica gt idle surging between 1500 and 2000

90 celica gt automatic 2.2 engine


idles up to 2000 then back down to about 1500 then back again



i have 2 videos i made of it


so far i.............

cleaned the egr valve(was sticking and full of carbon)

plugs have some carbon on them so i took them out and clened them too.....
they are bosch platinum plugs



a little history about it i bought the car with some rusted fuel lines in the winter i let it sit until this summer,fixed the fuel lines,it didn't have an air filter so i got one.....the idle was this way ever since i bought it........


check engine light was on i tested it flashed a code for the map sensor.....bought one used put it in now i get NO TROUBLE CODES

and it still idles funny......put it in drive or reverse it runs fine.......

here's the 2 videos i made........

this first vid just shows how bad it idles
http://video.tinypic.com/player.php?v=2m488b9



this vid shows how it is in drive and reverse
http://video.tinypic.com/player.php?v=48yngd4


this last vid shows how it runs after i pull the vaccuum line off of the intake....it's the line that comes from the dashpot


http://video.tinypic.com/player.php?v=47b10zq