Question about 2003 Cadillac Deville
Posted by Anonymous on
O2 sensor monitors the air fuel ratio consistently. It makes sure that the engine receives optimum fuel mixture all the time. If the mixture will be rich, i.e. more fuel and less air, it will signal the ECU to reduce the fuel supply and if the mixture will be lean, the fuel supply will be increased.
Posted on May 09, 2013
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Posted on Jan 02, 2017
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