Issues with manual bugeye corolla

[Bugeye11]

Hello, i have an issue with my 4a-fe corolla. 

The car itself is Fantastic and handles well but when the engine is cold the idle is at 1.5k rpm and as the engine heats up, it'll go to 1k rpm. 

So the idle speed behaviour in itself is rather normal when the car isn't moving. 

When the car is moving, and i change gears, everytime i push clutch pedal the rpm falls to 650 and then quickly goes up to 1k.

What has been replaced:

-fuel filter 

-spark plugs 

-spark plug leads

-distributor rotor 

-distributor cap 

-oil and oil filter with oem

-lambda/oxygen sensor

 

This issue has been eith the car before but it was fixed with changing spark plugs and leads, it came back after lambda was replaced after which distributor cap and rotor went bad and were replaced. IAC has been sprayed with carb cleaner and so has the throttle plate. 

 

I am not a native english speaker, amd i signed here as uk got the same car