Hi. I have a s2 erst. I have notcied when accelerating, btwn 2-3000rpm it stutters and hesitates but if i put my foot furthur down on the throttle it clears and pulls cleanly. It seems to do it at a certain point when holding the accelerator.

Could this be throttle posiition sensor? Only thing is it doesnt do it when in neutral, seems to rev ok then. Im thinking this as my nan owned the car before me from new and she wouldnt have ragged it and would have drove with the accelerator at that position all the time!!!!

Is there anyway of testing the throttle position sensor with a digital multimeter? Or anyway of cleaning it up and improving it without replacing it?