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In very simple terms the catalytic converter is an exhaust component that converts "bad" gasses into "good" gasses. The computer of the car monitors how well this functions by looking at oxygen sensors. Your car actually has two catalytic converters. The terminology goes as follows. When something is closer engine in the exhaust it is termed as upstream. ...


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I went through a similar predicament with my Vauxhall, and this is what happened. A universal antenna stem broke off a few months after installing it (the original one was basically degraded by weather in the course of the years, normal occurrence for very old cars). Don't know if it hit something or it was just a matter of aerodynamic resistance and poor ...


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