Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Kia Optima L4-2.4LFACTORY OEM SERVICE PROCEDURE
Engine Controls - TPS Adjustment
SOURCE: KIA Technician Times Volume 8 Issue 1, 2005
TITLE: TPS Adjustment Not Always Required
APPLIES TO: ALL
SERVICE TIP:
KMA has received some reports about technicians adjusting the Throttle Position Sensor (TPS), however, such an adjustment is not always necessary. The Bosch Engine Management Systems used on previous generation Sportage and Sephia/Spectra, as well as, the Siemens system used on Rio, Optima V6 and new model Spectra (2.0 L engine) do not require adjustment to the TPS after removal or replacement. The ECM on these vehicles will "learn" the new limit positions and corresponding voltage outputs after a few throttle applications. On Melco systems such as, Sorento and Sedona where the TPS is equipped with an integrated idle switch, some adjustments can be made. For Sorento and Sedona see Technician Times Volume 7, Issue 2, Page 7. Amanti vehicles are equipped with Electronic Throttle System (ETS) and do not require any mechanical adjustment on TPS or Acceleration Pedal Sensor (APS).
Note: The ETS system does require an initialization procedure after disconnecting or after replacement.
TITLE: TPS Adjustment Not Always Required
APPLIES TO: ALL
SERVICE TIP:
KMA has received some reports about technicians adjusting the Throttle Position Sensor (TPS), however, such an adjustment is not always necessary. The Bosch Engine Management Systems used on previous generation Sportage and Sephia/Spectra, as well as, the Siemens system used on Rio, Optima V6 and new model Spectra (2.0 L engine) do not require adjustment to the TPS after removal or replacement. The ECM on these vehicles will "learn" the new limit positions and corresponding voltage outputs after a few throttle applications. On Melco systems such as, Sorento and Sedona where the TPS is equipped with an integrated idle switch, some adjustments can be made. For Sorento and Sedona see Technician Times Volume 7, Issue 2, Page 7. Amanti vehicles are equipped with Electronic Throttle System (ETS) and do not require any mechanical adjustment on TPS or Acceleration Pedal Sensor (APS).
Note: The ETS system does require an initialization procedure after disconnecting or after replacement.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.