Hey guys i checked the searches (for more than one forum) and i can't find anything that is exactly like my problem so help if you can. here's the deal: 98 eclipse gs

when im driving down the road and depress the clutch or throw it in neutral, the the engine RPMs rev at 2300-2000. when i come to a COMPLETE stop, after about 2 or 3 seconds the idle drops, but only to 1500. ive check all vaccum lines and it appears that i dont have any leaks. i also have a new IAC from the rebuild. TPS resistance seems to be correct (4.6 Kohms) 3.5-6.5 is the window right? I also found out that when i unplug the cable that goes to the EGR solenoid that the idle goes to where it should be (900 RPM), but it still has the hanging idle at coast. anyone know when the EGR solenoid connector should be charged/uncharged? I also tested the EGR valve according to Chilton's instuctions. the valve doesn't appear to move when i rev the engine so i thought the valve might be siezed up. I connected a vaccum pump up to it (25 in Hg of vaccum!) and got it to move! appears to work fine..... :)

then last night, for experimental resons, i started the car put it in neutral, got out and pushed the car. once the car started moving (3-5 MPH) the idle jumped up to the 2300 RPM range again all by itself. (MIND YOU THAT I WAS NOT IN THE CAR). is there any relation between the speed sensor in the tranny to the the engine idle? this kinda explain why the idle hangs when im coasting and comes down ONLY when i stop COMPLETELY... but then again not really.... this one has got me stumped.... anyone have ANY idea what could've caused this?

i almost forgot, a few weeks ago i was at the gas station. when i was done filling up and i turned the car on the idle jumped to 5000 RPM and stayed! WTF?! i had to slide the hell outta the clutch to get home..

help please anyone, like i said i'm totally lost on this one:)

Cross posting is not allowed. You made a post in the General forum and not even 10 mins later you post in the Performance/Engine forum with the same topic. With patience you'll get an answer.

Don't do it again.