Can a ISCV cause idle revs as high a 2500 rpm??
Just thinking as I have no leaks (tested with diesel start spray) all volts etc are close to perfect, when using FLUKE at the ecu plug.
When unplugging iscv it drops to what ever baseidle is set to and its at the moment about 600 rpm cold (IDLE isnt set properly) Just think the rpm is seriously high perhaps caused by the iscv.