hey guys,
have tried to use the search button but doesn;t seem to work for me...
car in question is a imported altezza rs200 (similar to lexus is200)
my partner whilst driving noticed the engine stalled on her whilst slowing down. Prior to this the cars revs at idle has been fluctuating by about 300rpm.
does anyone know what would cause this? coils? stepper motor (if any)? or isc?

thanks,
Mike

On the LS and I assume it's similar on the IS it's normally that the throttle body and butterfly need cleaning.