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What happened to the O2 sensor?????


S2A109RAG

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Please someone shed some light on this horrible little problem.

Up until 2 days ago the O2 sensor was happy and reading on Mega-tune while data logging.

Now for some reason the gauge on mega-tune reads Red and fully around to the right at 28.

Is this normal? is the sensor just cooked? the wiring hasn't been changed since the first start up 6 months ago...........

Or is there a setting that I may have changed and not realized?

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As Al said, there's a few ways to clog them up or kill them. They don't like being hit/dropped either, and an exhaust leak will throw the readings off as air is richer than exhaust gas.

A clogged one (be it from over-fuelling, burning oil, etc.) can be revived by heating the tip with a blowlamp until it just glows cherry red - you can actually attach a voltmeter to the wires & see the voltage coming out while you do this.

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