Its worth it if your TPS
output voltage is below about 4 volts. This is approximately the full throttle voltage as read by the PCM
. Some trucks have been noted to be as low as 3.5volts or so at full throttle. My truck read 100% position using EASE and Auto X-ray. AE
showed it to be only 3.5 volts. (Key on Engine Off). Adjusting the TPS
output voltage did make a difference with my truck.
Remove the throttle pedal assembly from the truck. Remove the TPS
sensor and elongate the mounting holes so it's position can be rotated. You may have to remove the metal sleeves in the mounting holes. Remount the sensor, plug in the IVS
switch and TPS
sensor, and remount the throttle pedal assemby. Read the output voltage with the pedal at full throttle position while rotating the TPS
until it outputs about 4.0-4.2 volts or so. Tighten down the TPS
mounting screws. Some have posted that an output higher than 4.5 volts or so will make the PCM
revert to a idle engine speed state so don't over rotate the TPS
is a 5 volt 3 wire sensor. One pairing of the wires to it will read the 5 volt supply voltage using a voltmeter. Another pairing of the wires will show a varing voltage as you change the pedal position from about 0.5 volts to about 3.5 or higher volts. It is easiest to read if you have AutoEnginuity or a simular diagnostic tool. EASE does not work as noted already. If the peak reading is already about 4.0 volts you don't have to adjust it.