Posts Tagged ‘CRC’

A Clean Mass Air Flow Sensor Restores Lost MPG and Horsepower

January 10, 2017

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 for more details.

Winter Weather Tip

January 15, 2014

When cleaning your windshield, DO NOT leave snow and ice in the hollowed area at the bottom (where the wipers park). Ice will block the wipers’ parking area and can keep them from parking and shutting off, which could potentially end up burning out the wiper motor. When that area is clogged it may also result in tainting the vehicle’s cabin fresh air intake, exposing the passengers to exhaust fumes or other dangerous gases.

CRC ICE-OFF is a great product to melt ice, snow and frost on contact.

Automotive Cooling System Maintenance Tips

May 28, 2013

Water turns to a vapor or boils at 212°F. For every pound of pressure we put water under, it raises the boiling point 3 degrees. 15 lbs of pressure would raise the boiling point of water from 212°F to 265°F. (These numbers are all altitude sensitive.)  So 15 lbs of pressure created by the radiator cap multiplied by 3.5 degrees will move water’s boiling point upwards 45+ degrees. So under pressure, your radiator liquid will boil at 245-265°F and not at 212°F.

A large percentage of the engines that are replaced by professional technicians have been damaged beyond repair because of overheating. Others ran low on oil and some simply were worn out.

If you are thinking – If a 50/50 mixture is good, then 70/30 has to be better – get that idea out of your head immediately! Any deviation of this 50/50 mixture will do nothing to make your hot or cold protection any better. 100% coolant will cause your engine to overheat because 100% coolant cannot dissipate heat. Too much coolant can cause your engine to overheat because, like epoxy (or gravy), you need two components in the right amount to accomplish your goals.

The pressure tester to check the performance of your radiator cap is about 20 times the cost of a new cap, so replace the radiator cap with a name brand cap when you service your cooling system.

When servicing your cooling system, be sure to use a good flush to clean and remove the trash from your system. Rinse well with clean water. Then pick an appropriate coolant or antifreeze. You can enhance the properties of your coolant by using a water pump lubricant or rust inhibitor that will not damage your seals and gaskets.

About Mark Salem:

Mark Salem has owned and operated Salem Boys Auto in Tempe, Arizona since 1979. He is an ASE Master Tech since 1991 and has achieved L-1 certification for advanced engine performance. Mark is widely recognized and respected as an expert in his field and has been giving car repair advice on radio and TV since 1987.

About CRC Industries:

CRC Industries, Inc. is a chemical specialties manufacturer for maintenance and repair professionals and do-it-yourselfers in the automotive, marine, heavy trucking, electrical, industrial and hardware markets. CRC trademarked brands include: CRC®, K&W®, Sta-Lube®, and Marykate®. Visit the CRC website at

CRC also encourages automotive enthusiasts, professional technicians and do-it-yourselfers to interact with the company on Facebook. “Like” CRC at

For automotive maintenance videos, visit CRC’s YouTube channel at