hi,
My cossie idle rev are 3000rpm. After disconnecting ICSV they fall to 800 rpm.
I've bougth new and chaneged icsv, map sensor, crankshaft position sensor, phase sensor, coolant temp sensor, air temp sensor. I've also checked icsv wiring loom and it's ok. I even thought it could be ECU fault so i borrowed ECU form my friend's 4x4 cossie and idle rev are still on 3000rpm level

any guess what's wrong?