Hey All, New to the forum and I hope I can get some help/direction with an issue with my 2003 323 Astina Shades. I replaced the engine (1.8L) about 8 months ago and ever since the idle is high when I start the car, 1500rpm's approx. When I push the clutch in the revs drop to 800'ish which is where I'd expect it to sit normally, another strange occurrence is when sitting at a stop the revs hunt between 800-1500 whilst the brake is depressed, but go straight but up to 1500 when I take off the brake.
Things I've done so far: -
Checked for a vacuum leak
Cleaned the airflow sensor
Clean the throttle body
Disconnected the high idle solenoid (this drops the rev's to 800-1000rpm, drives better but runs crap when cold
Another strange one, cruise control no longer works (vacuum actuator)

Honestly, I'm not sure where to look next. Any help would be awesome.

Jase