Detecting Chevrolet Avalanche Oxygen Sensor Problems
Being rich doesn't always mean good news. In fact, it spells death for your vehicle. An engine that's running rich can cause performance problems, poor fuel economy, and decreased acceleration power. Fortunately, you can always count on your Chevrolet Avalanche oxygen sensor to help save your vehicle from such problems. The O2 sensor monitors and measures the oxygen content in exhaust gases so that your engine will run on optimum and accurate air/fuel mixture. The measurement from the oxygen sensor is then used by the engine's computer to properly adjust the air and fuel mixture in your vehicle. Incorrect adjustment in the mixture often results in poor engine performance and high emissions, so the oxygen sensor must always be in good working condition to ensure precise measurements. Problems with oxygen sensors often crop up after several years of use, but doing some troubleshooting right away can help save the sensor from total failure. Here are some tips to help you find the causes behind oxygen sensor problems:
Although there are several other factors that can cause rough idling, one of the parts that you should check first is your oxygen sensor. Often, the engine runs rough due to an oxygen sensor that's malfunctioning and sending inaccurate measurements to the computer. A faulty sensor can disrupt several engine functions, such as ignition timing and combustion intervals, causing your vehicle to stall and eventually run rough. Unfortunately, your engine can easily detect signs of oxygen sensor malfunction, so it will inject more fuel than necessary to counteract the problem. The extra amount of fuel often results in rough idling. To prevent this problem, have a mechanic check your vehicle's oxygen sensor. Better yet, test the sensor yourself with a 10-megaohm digital voltmeter. A voltage reading that takes around four minutes or more to fluctuate is a sign that the sensor needs replacing.
A sudden increase in vehicle emissions
If you're noticing an increase in your vehicle emissions, then your oxygen sensor has most likely gone faulty. If the sensor's malfunctioning, it won't be able to keep the emissions of your vehicle within the required parameters. Also, a bad sensor will have problems adjusting and measuring several engine operations and ratios. Test the sensor for proper operation and have it replaced if necessary to correct the problem.