Uh Oh…My Check Engine Light Is On

March 30th, 2017

So you come out to start your car one morning and the Check Engine light on the dashboard comes on…and doesn’t go back off again. You can’t really notice any difference in the way the car runs and drives, but it’s on anyway.

What does it mean?Check Engine Light

Since the late 80s, most engine functions have been controlled by a central drivetrain computer. This includes emissions controls, fuel metering and delivery, ignition timing, shift points and many other elements of drivability and performance. The drivetrain computer relies on information from a chain of sensors that monitor exhaust composition, camshaft position, throttle position and many other factors.

The voltage readings from any of these sensors are supposed to fall within a certain range. When ...[more]

  Posted in: Auto Repair 101

What Does Your Check Engine Light Mean? - Country Tire

December 27th, 2013

Check Engine LightWhen your car's "Check Engine" light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting your mechanic to locate the malfunction and get the light turned off.

The Check Engine light, more formally known as the Malfunction Indicator Lamp (MIL), is a signal from the car's engine computer that something is wrong. Older vehicles may not have this, but any newer vehicle is equipped with a tiny all-knowing computer that will be your lifeline in communicating any problem with how the engine is running. Your Tire and Automotive service department can diagn ...[more]

  Posted in: Tires 101