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Tech Tips
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The oxygen sensor sends a signal to the engine computer based on the amount
of oxygen in the exhaust gas. This signal is used by the engine ECU to fine-tune
the mixture to the optimum level for maximum catalyst efficiency and longevity.
A worn-out oxygen sensor can cause excessive gasoline consumption, elevated
exhaust emissions, accelerated catalytic converter damage failures and cause
engine performance problems such as surging and hesitating.
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