Vehicle: 2001 Ford Explorer Sport Trac I've gotten a few error codes for my TPS (P1121 , P1121 , P0122) and have decided to replace the TPS for starters. The issue I've ran into is that there is no way that the old & new TPS I've received can possibly function correctly. This is assuming that when the throttle lever is moved, the shaft turns the potentiometer and signals to the computer how much it has been rotated... But, this can't occur with these parts even though every place I've been shows that the new & old TPS are a match for the vehicle. The TPS goes onto the driver side of the vehicle with the opening facing left. The shaft turns clockwise yet the only way the TPS can turn is counter-clockwise (both facing the appropriate way). The only thing I can think of is that the throttle body attachments (lever etc.) was either placed on backwards, that the throttle body is wrong, or that there is another TPS out there that turns clockwise. The first two instances have been ruled out (kinda ; based on the way the screw holes etc are attached it seems it can only go on 1 way unless the entire intake manifold is off idk I'm still new-ish to fixing vehicles). My vehicle has had this problem a while, but as it wasn't seen as an immediate issue, I largely ignored it in favor of other repairs until my truck went into limp mode.