http://www.grandprixforums.net/remov...know-7092.html ---->p0420 code?

Idle voltage 0.47 vdc I'm guessing it's getting it's signal from tps. The voltage signal tracks linear positive without any drops with steady accel, or holding at any particular position.

Warmed up in park is 27* 0* kr....... 1/16 throttle in gear crusing 37* 0*kr.... then immediate, back well below 20* anything over 1/2 pedal
starts fine, possible cam gear? chain tensioner?

thanks