acidrippedhippy

Now Before I start I have read through the posts and the articles and have gone over the car time and time again.

The situation:

I have an Erratic idle after the car warms up. When i First start the car it idles at about 2000 rpm when she warms up finally it drops to about 900 where it acts like it is gonna stall and then goes up to 1300 and back. Kind of sounds like she is purring..

The parts:

The engine is a d15b8 pos For now. But she runs great just no *****.
The intake manifold is of a 95 delsol s non vtec d15 something so as not to need the reducer for my intake pipe The delsol was mine till it was totalled and i salvaged what i could.
The idle was occuring on the delsol and now it is on the civic.

My attempts:

1 I changed the map sensor back to the original
2 Ripped apart intake manifold and throttle body and cleaned it changed gaskets
3 checked for vac leak with starter fluid
4 cleaned the crap out of the iac valve
5 no pcv valve or egr valve
6 adjusted idle
7 no cel codes
8 checked tps
9 checked for voltage in wires

Now I am sure i did more stuff but thats all i can think of The main thing though is that it is isolated to the intake manifold for as the other one that was on the car did not do this. It doesnt affect my daily driving but it bothers me and i am sure is hurting it while i warm it up the the cold months.

Acidrippedhippy