4pcs Oxygen O2 Sensor Upstream & Downstream For 2001-2004 Toyota Sequoia 4.7 RWD
Specification:
Note:For clarification purposes:
Install Note:
You may be required to reset the vehicle computer after installation of this part.
Fit Vehicles:
Package Include:
Must Know Before Buying:
Q: How do I know the O2 sensor is good or not?(Online Video)
A:The only way to know if the O2 sensor is functioning normally is to check its responsiveness to changes in the air/fuel mixture, by Voltage Measurement or Waveform Simulation.
Use a 10-megaohm digital voltmeter. Hook up the voltmeter\'s red probe to the sensor\'s signal wire and the black probe to engine ground. (Use back probe method,DO NOTpierce the wire.) For a good sensor, voltage should fluctuate constantly between 0.1 and 0.9 volts after starting the engine for 2 or 3 minutes.
Please take avideo clipof the voltmeter and contact us if our sensor:
You\'re free to choose replacement or refund if our sensor fails to work, in this case.
NOTE BEFORE ORDERING:
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