Cutlass Supreme V6-204 3.4L DOHC VIN X SFI (1995)
Throttle Position Sensor: Testing and Inspection
A broken or loose Throttle Position (TP) sensor may cause intermittent bursts of fuel from an injector and unstable idle because the PCM thinks the
throttle is moving. A problem in the TP sensor 5 volts reference or signal circuits should set either a Diagnostic Trouble Code (DTC) P0122 or DTC
P0123. A problem with the TP sensor ground circuit may set DTCs P0123 and P0117. Once a DTC is set, the PCM will use an artificial failsoft value for
TP sensor and some vehicle performance will return. A high idle may result when either DTC P0122 or DTC P0123 is set. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection
