Throttle Position (TP) Sensor Or Throttle Switch
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2000 Isuzu VehiCROSS, 2000 Isuzu Trooper, 2000 Isuzu Rodeo, 2000 Isuzu Hombre, and 2000 Isuzu Amigo. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
TP sensor is an auto-zeroing type and is not adjustable. See appropriate
SELF-DIAGNOSTICS article.