Another Idle Question

[Rubidon]

I have a '97 Eclipse GS with a 420a and manual transmission. The problem is the idle. When I start the car to warm up before work,it idles 1200 rpms for about a minute and then goes down to about 800 rpms,this I think is normal. The problem starts after I drive down the road. When I push in the clutch the idle jumps to around 2000rpms and stays there until the car comes to a complete stop then it goes down to about 800 rpms.It happens at every stop and it idles good while stopped. I have searched and read a lot of tech guides but none seamed to be like this or I missed it. I am sorry for another idle question but this is annoying.
Thanks for the help in advance,this is my first DSM but probably wont be the last, my friend has a MR2 so I will have to turbo this and beat him!!!

 

[david-b]

My car always did the same before my rebuild. This seems to be pretty normal for a lot of people.

I would check for leaks in vacuum lines. Also test the IAC to make sure it's working up to par.

 

[Rubidon]

I will do thanks for the input!

 

[Rubidon]

Something new to the mix, the other day my CEL came on and I noticed the rest of the way home the car idled good. I left the light on for two days and the car idled good,took the car to Advanced Auto had them check the light-P0455-Leak in evap system detected. They turned off the light and now the car idles like crap again. What does the evap system have to do with the car ideling other than possible vacuum leak. Can I remove all of this without ill effects? I live in Michigan and don't have emissions tests.

 

[david-b]

EVAP is a full vacuum system. Any leaks there will cause the car to not run properly. Every vacuum line is tied into the motor in one way or another. One small leak will cause issues. If you don't have testing, pull it out. Will keep the CEL on though.