Question about 2004 Volkswagen Golf
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Posted on Jan 02, 2017
SOURCE: NOX SENOR
I have yet to see a car with a Nitrogen Oxides(NOx) sensor on it. However I have seen Oxygen (O2) sensors. The O2 sensor monitors the remaining amount of oxygen left in your exhaust, and tells your Engine Control Unit(ECU) how much fuel to use. The sensor looks much like a stainless steel spark plug and is found in the exhaust system. Your car being a 1991 it should only have one. It will be up stream of the Catlytic converter, maybe in the Exhaust manifold. cost between 50 and 150$us.
Posted on Jan 09, 2009
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