Buy 2004 Lexus IS 300 Throttle Position Sensor. Throttle Position Sensor - Repair or Replace Your Tells, Far, Depressed - OEM Lexus Part # 8945230150 (89452-30150)

SENSOR, THROTTLE POSITION (FOR E.F.I.)

Fits ES 300, GS 300, GS 430, IS 300, LS 430, SC 300, SC 430

Throttle Position Sensor - Repair or Replace
Your engine’s throttle position sensor tells the engine computer in your 2004 Lexus IS 300 how far the gas pedal is being depressed. If it has failed, you may notice symptoms such as no acceleration or poor acceleration in addition to a check engine light.