Hi Chris,
when you look in front of the engine, you see the idle stabilizer valve. It´s a black round box with a connector at the left.
Under that black round box you find the throttle valve potentiometer and his connector also from the left side. In it they are 6 pins, clean them and the pins from the potentiometer.
Sorry about the pic.
Greets, Georg

Gruss, Georg Hubraum statt Wohnraum..