Hi! Car is a 1988 RWD Sapphire cosworth.
I got the car with an unlinked ICV and the mechanic told me not to link it. No problem with the exception of cold start that can be painful, running fine when warm, base idle 900-950.
The ICV is a VAE01.
I ordered a new one on the net, and I received a VAE06. It looks quite different from the old one, with a long spring and a plastic wheel against the nut. On cold start the engine jumps up to 2000 rpm for a few seconds, then drops dramatically down, even stalling most of the time. When hot, the engine is hunting badly, until I disconnect the ICV when it gets steady at base idle.
Any clue appreciated!
J-P