this is starting to get anoying. once the ar has warmed up and i stop the revs drop then nearly stall then go up to like 1300-1400rpm. so this defo aint idling right. any ideas

you need to check your base idle setting.if set wrong can cause you fault . plus look for basic air leaks etc.

how do i check base idle setting lol

Clean the ECU temp sensor and connection

you really need consult in an ideal world. if you have a hertz or duty cycle mutimeter you can check the duty on the ground wire from the aac valve it should be around 25 to 30 % duty . at idle that will give you correct idle regulation .if not then adjust bleed screww to gain correct level. you can try disconnecting the aac valve but that does not always shut it down correctly . but try it if the revs drop and she stalls raise the idle on the bleed screww to 650rpm on man or 700 rpm for an auto.

you need to check your base idle setting.if set wrong can cause you fault . plus look for basic air leaks etc.

 

 

doubt its base idle

 

do a general cleanup of the main connections

 

check for any air leaks 1st normal a hunting or rising idle is an air leak check hoses for splits or generally loose hoses around the engine bay

i would always check the basics first and base idle is one of them. plus the air leaks etc.