Audi Air Mass Meter
Audi uses the tag line "Advance through Technology" not only are the Audi's most luxurious but are also the most technologically advanced cars. The air mass meter was developed and later incorporated into the Audi's works to measure the air flowing into the engine; the mass of the air flow then helps decide the exact amount of fuel supplied to the engine. The Audi Air mass meter is placed directly behind the airbox to measure all of the filtered air. Your Audi Air mass meter is a plastic tube with sensors inside and there is a plug with electrical wires attached to it which sends the air mass meter information to your Audi's computer (ECU).
The Audi air mass meter functions in a method similar to oxygen sensor and feeds your Audi's engine computer with correct inputs to guide it on the right delivery and computing of fuel to be supplied to the engine. Air concentration varies as the air expands and contracts in accordance with temperature and pressure. For your car, air density changes as with the running environment, and hence is smart application for your Audi air mass meter.
Each time you drive your Audi the vane or electrical wire inside the Audi air mass meter has air passed over it, though the air comes filtered through the panel filter inside the airbox, there may still be some minute dust particulate or pollen etc. This dirt or pollen can build up with time and reduce the efficiency of your Audi air mass meters, eventually resulting in a defunct Audi air mass meter. A non-functioning Audi air mass meter normally results in a major affect on your Audis power and its mileage.
While after a long run or having a lot of people or cargo in your car if you feel the power is intermittently disappeared and after a while or if you switch the ignition off, the problem would goes off probably your Audi Air mass meter is on its way out. This happens because in an Audi when the Audi air mass meter does not pass out any signal to the ECU, it switches itself to the limp mode (the cars on board computer runs in a mode to minimize any damage to the engine). This limp mode was the cause of the loss of power.
Audi air mass meter like every other part of your Audi is not a part that will last forever, and to an extent you can clean the internal parts, it is however more desirable in the long run if you replace a non working Audi air mass meter.
A replacement Audi mass meter can easily be obtained from any of the several trustworthy websites over the internet. Replacing your Audi air mass meter is a 15 minute job and does not require any specialist tools.
Caution: Before you begin to work on replacing the Audi air mass meter disconnect the battery power to the ECU (cars on board computer) and keep it disconnected for at least 30 minutes allowing the ECU to reset. This ensures that all the old ECU settings are wiped and it starts up again to use the new Audi air mass meter readings.