How to Detect and Clean a Faulty Mass Airflow Sensor CarsDirect — Volkswagen Lupo I

26 Апр 2015 | Author: | Комментарии к записи How to Detect and Clean a Faulty Mass Airflow Sensor CarsDirect — Volkswagen Lupo I отключены
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How to Detect and Clean a Faulty Airflow Sensor

A check light often comes on due to a airflow sensor (MAS). the symptoms of an MAS that needs and how to clean it.

A mass airflow (MAS) determines the mass of air a vehicle’s fuel injection and passes that data to the Control Unit, or ECU. The air information is necessary for the ECU to correctly and deliver the correct amount of to the engine. When a vehicle’s airflow sensor is faulty or it can cause a variety of problems, and results in very poor from your engine.

Symptoms of a Faulty Mass Air Sensor

A faulty mass sensor will cause similar to low compression or low vacuum, and also show symptoms to when your vehicle has low pressure from a faulty pump. Here are some of the common symptoms of a faulty airflow sensor:

The engine is very hard to or turn over

The engine shortly after starting

The hesitates or drags while load or idle

Hesitation and during acceleration

The engine

Excessively rich or lean

Polo vivo sensors air flow meter


If you believe your car has a faulty air flow sensor, take it to a mechanic so that a complete diagnostic can be run. In most a faulty mass flow has a specific code that generate during computer and is usually easy to determine computer testing equipment.

How to Clean a Dirty Mass Sensor

Generally, you’ll to clean your mass sensor either every six or every time you change oil. Cleaning it when you or clean your air filter be a good way to save both and money.

Remove the Sensor

To clean your mass sensor, first, you must it out. This is done by your vehicle’s air box and using a screwdriver to pluck it out. removing the sensor, be sure to touch the wires. A disconnected airflow sensor can’t you, but the wires are delicate and Breaking one will require a which can run upwards of $100, so best to be cautious.

Clean the

Next, you have two choices. The option would be to take mass airflow sensor and it in a plastic bag filled with alcohol. Take the bag and move it making sure the alcohol all of the dirt and grime from the Another option would be to go to local auto parts and buy a special mass airflow cleaner, and spray it onto sensor, but as stated before, is more expensive.

Polo vivo sensors air flow meter
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