Here Are The Five Most Reasons You “Check Engine” Light Might Come On.

A Faulty Oxygen Sensor: The Sensor Measures The Amount Of Unburned Oxygen In The Exhaust And Tells The Cars Computer How Much Fuel Is In The Tank.  If A Faulty One Is Not Repaired, The Car’s Gas Mileage Could Drop, Since The Sensor Is Sending Incorrect Information To The Car.

Loose Or Missing Gas Cap:  We Will Of Course Tighten The Cap For Free Or Replace It For A Few Dollars.  If It Is Not Replaced, Gas Will Evaporate From The Car And Decrease Its Gas Mileage.

Broken Catalytic Converter: The Catalytic Convertor Uses A Catalyst-most Often A Precious Metal Such As Platinum-to Conveert Harmful Gases Left Over From Combustion To Less Harmful Emissions.  

Malfunctioning Mass Air Flow Sensor:  The Sensor Measures The Amount Of Air Supplied To The Engine, Which Determines How Much Fuel Should Be Delivered.  When It Malfunctions, It Can Result In A Loss Of Power To The Car, Surges During Acceleration And A Decrease In Fuel Economy.

Misfiring Spark Plugs: Spark Plugs Are Small But Essential, Since They Make The Car Go By Igniting The Compressed Fuel In An Internal Combustion Engine. Misfiring Spark Plugs Can Affect Engine Power And Fuel Economy And Can Also Damage The Catalytic Converter.   

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