CNSensors

The mass air flow (MAF) sensor, part of your vehicle’s electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. A faulty MAF sensor can cause your vehicle to run too rich or run too lean. You’ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires.

· However, no other symptoms are happening other than the gas mileage estimator became erratic after I finally did a reset to my driving this morning. It was reading before I did the reset. After the reset, it started out at mpg and slowly counted down to mpg. I avg 210220 miles per a tank of gas. Drives smoothly like a new car.

· Let us say you have a 15 x inch wheel giving you a mpg fuel economy. Upsizing this to say, 19 x inches will substantially drop the fuel economy by about 10% to mpg. Upsizing it to about 2 inches (17 x inches) will give you a % reduction in fuel economy.

· These are just a few tips and reasons why you might not be getting the best possible gas mileage in your vehicle. For more information or to get your car inspected and tuned up for excellent performance and fuel economy, call San Francisco Automotive Solutions today at (415) 9571170 or schedule your service appointment online .

Faulty oxygen sensors negatively affect fuel economy. A bad oxygen sensor can cause gas mileage drops of up to 40% by reading incorrect information to the CPU making the vehicle dump wasted fuel into the cylinder and destroying fuel economy. Gas mileage losses can occur with sensors that are just old, worn, and not outputting voltages properly.

A Jeep Grand Cherokee can get between 12 and 20 miles per gallon, depending on the engine size, options and weight of the truck. Increasing this mpg can be done by using additives, installing bolton equipment and replacing maintenance items with highperformance alternatives. The average backyard mechanic can ...

· Most cars default to the factory airtofuel ratio if the oxygen sensor fails, which can cause problems because of nonstandard temperature, moisture, or air composition. If your oxygen sensor is failing, then its readings will be inaccurate, again, resulting in a suboptimal fueltoair composition.

· Modern cars control fuel flow and exhaust emissions very preciselydata also used to calculate the car''s economy at any given time. If those sensors were so inaccurate, your car probably wouldn''t ...

A knock sensor does exactly what its name says: It senses knocks in a running engine. The knock sensor does not diagnose the problem; it simply tells the vehicle’s electronic systems monitoring equipment that a problem exists. Any time an engine is performing less than optimally, logic suggests its gas mileage will be ...

Driver feedback devices can help you drive more efficiently. A recent study suggests that they can help the average driver improve fuel economy by about 3% and that those using them to save fuel can improve gas mileage by about 10%. 3. Sensible driving is also safer for you and others, so you may save more than gas money.

· As gas prices continue to climb, increasing the fuel mileage is the best way to protect your pocket book. Here are a few ways to spend less money on gas by increasing your car''s efficiency in using it. Set the car tires to the proper...

· The sensors are often quite expensive and can be difficult to reach and replace; they often rust and get stuck. 15. Boost pressure sensor. The boost pressure sensor measures the boost pressure in the intake boost pipes. You do only have this sensor if your …

Car manufacturers place oxygen sensors in specific areas to ensure the fuel mixture is neither rich nor lean. The number of sensors in a vehicle, though, differs. Those with V6 and V8 engines typically have three. A car with a fourcylinder engine, on the other hand, may more commonly only have two. Operationally, O2 sensors are basic. If the ...

· Bad gas mileage is caused by a number of different things. The list goes on and on, but there are various things that attribute to this problem. Bad gas mileage means that your car is not running as efficiently as it could, and it also means you are losing money at the pumps because you are filling up more often.

But they degrade over time and that can cost you up to 15 percent in gas mileage. When they fail, the computer lights up your ‘service engine soon’ light, forcing you to incur an 80 diagnostic fee. On pre1996 vehicles, replace your oxygen sensor every 60,000 miles to keep your mileage at its peak.

· Let us say you have a 15 x inch wheel giving you a mpg fuel economy. Upsizing this to say, 19 x inches will substantially drop the fuel economy by about 10% to mpg. Upsizing it to about 2 inches (17 x inches) …

· Slow down. In our tests we’ve found that driving faster on the highway can really take a bite out of a car’s fuel efficiency. We measured gas mileage while driving at a …

Answer (1 of 6): Because either the sensor is reporting incorrect air amount and or air temperature to the ECU. So you either have a bad sensor or the heated sensing wires are contaminated. The MAF sensor measures air weight in grams per second and air temperature and if either of those two are...

· We all want our car to go longer on a single tank of gas. While all vehicles come with a mileage or mpg ranking, mileage can actually vary depending on where you live, driving style, vehicle condition, and a host of other factors. Knowing the actual mileage your vehicle gets is useful information to have and is very easy to calculate.

Can Replacing Your Air Filter Improve Gas Mileage? A clean air filter protects the engine from harmful debris without obstructing airflow. To promote engine health, most automotive manufacturers recommend replacing the air filter every 15,000 to 30,000 miles. But, does replacing your car’s air filter also improve gas mileage?

· 03/31/2021 10/22/2018. The symptoms of a bad mass air flow sensor include low engine power, poor fuel economy, an engine that won’t start, a check engine light on the dash and a gas smell from the exhaust fumes. A bad mass air flow sensor is often the likely culprit if your car isn’t running as it should. The job of the mass air flow sensor ...

· My car has 210,000 miles now and I just realized that I still have the original O2 sensors. My mileage has been suffering ... Now that it''s been tuned a little better he wants me to do a full tune up before ... the PCM will set a low goal voltage which results in a lean fuel mix which can cause the engine to run hotter and ...

· As the sensor gets old, this jumping of numbers slows down. This is called getting lazy. The lazier the sensor gets, the worse your gas mileage may become, due mainly to the fact that the computer can only go on the information which is given it. I''m not sure if it would drop as much as you''re talking in your case, but it will drop.

Seems we''ve been focused on fuel economy for decades. And that''s a good thing. The question then becomes how to get better gas mileage. If you want to know how to improve fuel economy, aim for the obvious in your fuel consumption habits and be willing to try what you haven’t tried. Here are some tips to keep in mind. 1: Tire inflation