Hi mech5107 That is really a good idea about the idle control valve! Can this be found on most Toyota engines? I took my car for diagnostics and troubleshooting,when I got it back an apprentice gorilla had crushed the unit in a vice ( guess he thought a girl would not notice and said he tried to service it and it really is not a  necessary item......) The car had a slight misfire and  high idle, when I got it back it was undrivable .(maybe his mate needed some parts????.) Am I correct in thinking that any idle up solenoid will work even if it looks different? Is it meant to increase idle speed when engine is under load.? Am nervous taking my car anywhere now. Thanks for letting me bend your ear