What is a throttle position sensor?
A throttle position sensor is also known for short as TPS. It is
used to keep track of where the throttle is in an internal
combustion engine. It can be found on the butterfly spindle.
Throttle Position Sensor (TPS) is basically a rheostat. Here is
how Merriam Webster defines it: ; Main Entry: : rheo·stat ;
Pronunciation: : \ˈrē-ə-ˌstat\ ; Function: : noun ; Date: :
1843 : a resistor for regulating a current by means of
Basically, the TPS offers variable resistance depending on the
winding or unwinding of its actuator. When you goose the throttle,
or take your foot off the gas, the TPS tells your vehicle's
computer where the throttle is. Look under your hood at your fuel
rail or throttle body. on one side you will see the terminus of the
throttle cable and the cam around which the cable is wound.
Directly on the opposite side of the throttle body from here, you
will see the TPS.