Quote:
Originally Posted by phly
Hmmm not sure if the sensor is at a different position to yours cuz ive got Hurricane extractors and no heatshield. Theres heaps of space to loosen it with a wrench
Mine's pretty charcoal coloured, but the holes arent blocked. Im not sure if the colour matters. From what ive seen its only bad if the holes are blocked but yeah I dunno.
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The charcoal colour is normal as it is constantly in contact with burnt hot gases. you are not meant to clean it with any chemicals. If the holes are open then its mechanically ok. The only way to test it electrically is to connect a voltmeter or a voltage bar graph to the sensor wire and see if the voltage fluctuates between 0.1 and 0.9 volts during closed loop operation. As the sensor gets older the frequency of fluctuation gets lower.