TOYOTA WiLL Vi,year 2001
 

Hi to all, I'm hoping somebody can help. I have a Toyota WiLL Vi,year 2001.The engine will not idle properly. The revs pitch high, then die until it cuts out.On the motorway at 60mph when foot is taken off the accelerator pedal the car continues at 60mph for a while before the revs drop.I am a motor mechanic by trade although not practicing fulltime. I have replaced the air mass meter,e.c.u,engine temp switch,complete throttle body (second hand).No success. Does anybody have any ideas as to what the problem is.I have had it with Toyota Mechanics but their machine does not have the Will listed for diagnostics. Hope somebody can help.Thank you.Kieran, Dublin,Ireland