TPS-003 The LS1 demands precision, and this Delphi Throttle Position Switch delivers it. When your TPS fails, your engine loses critical feedback on throttle position—triggering rough idle, hesitation, and poor fuel economy. This genuine Delphi replacement restores accurate throttle blade data to your ECU, ensuring spot-on engine load, fuel injection, and ignition timing. Direct OEM replacement that bolts straight in. Eliminates the guesswork and gets your LS1 running clean again. Genuine Delphi Technologies Throttle Position Switch (TPS) for LS1. Holden Commodore VT, VX, VY, VZ with LS1 engine A faulty Throttle Position Switch (or Sensor) causes erratic engine performance. Because it fails to correctly tell the car's computer how far the gas pedal is pressed, the engine struggles to calculate the right air-fuel mixture. This usually results in poor acceleration, sudden jerking, and engine stalling. Common warning signs include: Acceleration Issues: The car may hesitate or buck when you press the accelerator pedal, or unexpectedly surge forward without warning. Rough Idling or Stalling: The engine RPM may jump up and down, or the car may stall out at traffic lights. Poor Fuel Economy: Inaccurate readings can cause the engine to run "rich" (too much fuel), wasting petrol, potentially fouling the spark plugs and sometimes causing dark exhaust smoke. Transmission Troubles: In automatic vehicles, the computer relies on the throttle switch to know when to change gears, leading to delayed or harsh shifting. SS10282 07025
