- - Question About 02 Sensors.
(https://www.nopistons.com/2nd-generation-specific-17/question-about-02-sensors-38746/)
marcus7
05-13-2004 11:42 AM
Originally Posted by wopa20' date='May 13 2004, 07:44 AM
How do you know it needs to be replaced? Just wondering, Ive never even thought of changing mine... Maybe its time? What kinda stuff do you look for to indicate a needed change?
It’s not listed in the owners manual, but according the Bosch their unheated O2 sensors (that’s what an FC uses) should be replaced every 12,000 miles. Every 4 years or 50K is probably good enough (unless the car is burning oil and/or subject to the ATF trick). To check it, warm up the engine, disconnect the O2 sensor, rev the motor in a violent fashion (is there any other fashion while testing in a garage? https://www.nopistons.com/forums/pub... ) while checking the O2 sensor voltage. It should be .5V to 1.0V during acceleration and 0V to .4V during deceleration.
