Restore performance in dusty engine bays
Liqui Moly’s Air Flow Sensor Cleaner offers a dependable maintenance solution for modern petrol and diesel engines – particularly in bakkies – operating in Africa’s harsh, dust-laden environments, including busy cities, rural farms and challenging mining and construction sites.
The high performance Liqui Moly aerosol-based sensor cleaner is designed to remove contaminants from the delicate hot wire or hot plate components inside air flow sensors, without any mechanical contact. Liqui Moly Air Flow Sensor Cleaner restores accurate fuel-air mixture readings, thereby improving engine performance and enhancing fuel efficiency. This product also reduces emissions and extends service life of components.
“This efficient cleaner is engineered in Germany to stringent quality and environmental standards and is recommended for petrol and diesel vehicles driven in harsh conditions, where dust is pervasive and vehicle servicing practices vary,” states Carlo Beukes, Business Development Manager, Agricultural, Automotive and Lubrication divisions, BMG. “In Africa, motor cars and bakkies regularly travel on gravel and dusty roads and airborne grit finds its way into air intake systems, even with air filters in place. This dust accumulates on MAF (Mass Air Flow) or hot‑film sensors, compromising the engine’s ability to measure air flow accurately.
“The air flow sensor is critical for petrol and diesel vehicles with electronic engine management systems and is often overlooked during routine servicing, even by authorised dealers. Research indicates that a significant number of bakkies and commercial vehicles show degraded sensor performance from dust ingress, leading to sluggish acceleration, increased fuel consumption and unnecessary replacement of functioning sensors.
“Liqui Moly’s cleaner is purpose-built for this sensitive task. Unlike conventional cleaning agents that can leave residues on delicate sensor components or damage plastic housings, this specially formulated solvent blend cleans without contact or abrasion. It evaporates rapidly and completely, leaving no residue that could interfere with a sensor’s delicate electronics.
“Apart from the benefits of improved throttle response, lower fuel consumption and smoother idling, regular cleaning of the air flow sensor can prevent shifting issues in automatic transmissions, which often rely on air flow data to perfectly time gear changes.
“This is a simple but effective preventative maintenance step that extends sensor service life and protects engine performance. We strongly advise against using multi-purpose or aggressive cleaners that can damage the sensor’s surface coating or fail to remove fine deposits, causing further damage.”
The Liqui Moly air flow sensor cleaner is simple to use: the electrical connection to the air flow sensor is disconnected and the exposed sensor is sprayed generously with the cleaner. Contaminants dissolve and drip off, without the need for mechanical contact. Once dry, the sensor is re-installed and the vehicle’s engine management is immediately able to recalibrate correctly. To achieve the best results, the cleaner should be used every time the air filter is replaced or when drivability issues suggest there is possible air flow sensor degradation.
For complete care of petrol and diesel engines, BMG specialists recommend that the Liqui Moly Air Flow Sensor Cleaner is used in conjunction with a throttle valve cleaner and injection cleaner. These complementary products address additional buildup along the air intake path and within the fuel system, offering a comprehensive engine care solution for vehicles exposed to heavy-duty conditions, urban pollutants or inconsistent fuel quality.
Other Liqui Moly automotive products available from BMG’s branch network and online shopping platform include silicone gasket sealants, sealant removers, engine oil additives, transmission fluids and a broad range of care products.
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