You need a multimeter or a logger. I just hooked my logger up and it shows TPS %, I adjusted the TPS untill the logger read 0% when the throttle plate was closed.
With the multimeter follow the directions on page 4:
http://www.iamsethmo.com/Manuals/199...e%20charts.pdf
And page 30 here
http://www.iamsethmo.com/Manuals/199...and%202.4l.pdf
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