Join Date: May 2009
Location: The Republic of Dave
I've never heard of manually calibrating the TPS. The only thing you should have to do - to my knowledge - is to make sure that the throttle shaft intersects the TPS connection in the proper orientation. It's a simple plug-in connection, and it should be self-calibrating through the PCM.
When you replace the sensor and you still have a code, you may very well have a problem in the connector itself, or in the wiring leading up to the connector...which is why you check/replace those areas first before you replace a sensor that's actually working. If you get the P0121 code along with it the P0123 at any time, it's a bad ground, likely.
If it's worth doing, then it's worth overdoing.
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