Lambretta65

Hi new member looking for some advice. I have a 2000 (V) IS200 that starts from cold but cuts out after a couple of miles and won't restart until cold again, usually around 2 hours later. Six coil have been replaced over the past six months plus plugs. Just replaced the Crank Shaft Postioning Sensor on advice f Lexus mechanic but fault persists. Fault clears itself from dash only to reapear when car cuts out. Fault code on diagnostis is P1300 (ignition fault at cylinder 1). I'm feelin...