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The Terminator
Engine/Tuning
problems passing inspection Engine computer will NOT read cat converters
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<blockquote data-quote="sabotage" data-source="post: 12777416" data-attributes="member: 130722"><p>That easy.....your car has been tuned and the rear o2s are turned off.......the only way you can complete the readyness monitor for the catalytic converter is if both o2s are functional, its how the pcm runs the catylist monitor it compares upstream o2s and downstream o2s . The readings your getting on the front o2s are completely normal you should see rich lean. Voltage Ranging from 0 to 1 volt.....</p><p>.0 lean 1v rich. </p><p>Front o2 should be moving really fast up and down .....rich lean rich lean and the rear o2s should be going slowly up then down if the catalyst are good. If there hollow or below efficiency they follow the front o2 sensor pattern because there is nothing happening in the cats...no cumbustion....the hc going in the cat comes out .....so same reading on front and rear o2s.</p></blockquote><p></p>
[QUOTE="sabotage, post: 12777416, member: 130722"] That easy.....your car has been tuned and the rear o2s are turned off.......the only way you can complete the readyness monitor for the catalytic converter is if both o2s are functional, its how the pcm runs the catylist monitor it compares upstream o2s and downstream o2s . The readings your getting on the front o2s are completely normal you should see rich lean. Voltage Ranging from 0 to 1 volt..... .0 lean 1v rich. Front o2 should be moving really fast up and down .....rich lean rich lean and the rear o2s should be going slowly up then down if the catalyst are good. If there hollow or below efficiency they follow the front o2 sensor pattern because there is nothing happening in the cats...no cumbustion....the hc going in the cat comes out .....so same reading on front and rear o2s. [/QUOTE]
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problems passing inspection Engine computer will NOT read cat converters
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