With the ever-rising costs of fuel, who can afford to waste even one single drop? But it’s happening to you right now if your vehicle has a dirty mass air flow (MAF) sensor.
An MAF sensor constantly measures the amount and density of the air entering the engine so the computer knows how much gasoline to inject into each cylinder. Located after the air filter and ahead of the throttle body, the MAF sensor uses a heated wire (hotwire) or flat film element to measure airflow.
The MAF sensor works by holding the operating temperature of the hotwire at a constant temperature. As air moves over the hotwire, the wire will cool down. More air running across the wire requires more electrical current to keep the hotwire heated.
A vehicle’s computer depends on extremely accurate measurements of air mass and density from the MAF sensor to help calculate everything from the amount of fuel needed to run the engine efficiently (without excessive emissions) to transmission shift points and ignition timing.
If there’s a film or dirt on the hotwire it will insulate it and slow the communication between the MAF sensor and the computer; a situation that can directly cause drivability issues, excessive emissions and poor fuel economy resulting in fewer MPG than your vehicle is meant to reach.
Mass air flow sensors can get dirty in a number of ways. Pollen, dust particles and soot can build up and burn onto on the hotwire of the mass air flow sensor causing incorrect measurements of air flow and density. This can lead to hesitation, sputtering, hard starting, stalling, excess emissions and power loss.
Oil can also build up on the hotwire, caused by excessive blow-by from internal engine wear or, more often, where an aftermarket air filter that requires oil is fitted to the vehicle. Sometimes a consumer will over oil these air filters and the oil will travel directly from the filter onto the MAF sensor leading to malfunction.
Recognizing the need for a product to safely clean fragile mass air flow sensors, CRC Industries, manufacturer of Brakleen® Brake Parts Cleaner and an industry leader in automotive maintenance chemicals, developed CRC Mass Air Flow Sensor Cleaner, the FIRST cleaner specifically designed for the MAF sensor. Julie Williams, Marketing Manager for CRC, warns: “DO NOT use carburetor or brake parts cleaners to clean MAF sensors. Aggressive chemicals can degrade the plastic housing and sensitive electronics of the MAF sensor leading to malfunction.”
Cleaning your MAF sensor is easy and should take about 10 minutes. First, turn off your vehicle and locate the MAF sensor between the air box and throttle body. Unplug the MAF sensor wire harness and remove the MAF sensor housing. Typically a screwdriver will work, but you may need a TORX® security bit for some models. Place a shop towel under your MAF sensor to catch any run-off. With the straw attached, apply 10-15 sprays of CRC MAF Sensor Cleaner onto the hot-wires, but be sure the hot-wires do not come in contact with the straw or any other object.
Spray all sides of the MAF sensor and clean all wires and connectors. Finally, reassemble the MAF sensor and allow it to dry thoroughly before restarting the engine. This would be a great time to clean or change your air filter, too.
The CRC plastic-safe formula is extremely effective and proven to renew MPG and up to 10 horsepower with dynamometer proven results. You’ll get increased horsepower, better fuel economy (more MPG), improved air/fuel ratio, fewer emissions and a smoother running engine when you clean with CRC Mass Air Flow Sensor Cleaner.
Do-It-Yourselfers can find CRC Mass Air Flow Sensor Cleaner at their favorite auto parts store. Or, schedule an appointment with your mechanic and ask him to clean your MAF sensor using CRC MAF Sensor Cleaner, the only product safe for cleaning MAF sensors and backed by proven results. Visit http://www.crcindustries.com for more details.