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『Audi A6 air flow meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Where is the air quality of the Audi A6?
It is located at the external air conditioning filter, and you can see it by opening the right front grille.. Manifold Absolute Pressure Sensor, abbreviated as MAP. It is connected to the intake manifold through a vacuum tube. With different engine speed loads, it senses the vacuum changes inside the intake manifold, and then converts the changes in internal resistance of the sensor into a voltage signal, which is used by the ECM computer to correct the fuel injection quantity and ignition timing angle. L-type engines are equipped with air flow sensors, while D-type engines are equipped with intake pressure sensors. Product Performance: The Audi A6L series is a domestically produced high-end luxury commercial vehicle launched by FAW Volkswagen. The Audi A6 incorporates Audis most advanced high-tech and exclusive technology in the world, further enriching its luxurious configuration and endowing it with super strong sports characteristics, reflecting its perfect quality from design to performance. Its characteristics are more luxurious, dynamic, and mature. More luxurious is mainly reflected in BOSE sound system, TV/DVD and refrigerator, all of which are world-class branded products. More dynamic is reflected in the sports seats and steering wheel; More mature is reflected in the Audi A6 [2], which has undergone multiple successful upgrades and not only meets a new standard for monitoring, but also has strong reliability.
The difference between the original and aftermarket air flow meters of the 2.03 Audi A6
Usage time and measurement accuracy.
.1、 The usage time of the 03 Audi A6 air flow meter is longer than that of the original factor
2、 The measurement accuracy of the 03 Audi A6 air flow meter from the original factory is higher than that of the aftermarket, accurate to one decimal point.
3. Fault analysis of air flow meter
Problem 1: Audi A6, APS type engine has unstable idle, black smoke under local load, and sometimes stalls when shifting gears.
. Detection process: The internal fault of the computer is stored as an old air flow meter fault, but after a detailed inspection of the air flow meter circuit, the condition is normal, and using VAG1552 to execute functions 01-08 reads data quickly. The intake air volume at idle is 2.5g/s, which meets the specifications. But the problem with the air flow meter remains the same after replacing it, the cold car works normally after replacing the computer, and the problem persists after heating up the car. At this point, when checking the entire vehicle data block again, it was found that the voltage transition frequency of the oxygen sensor in the second zone of the 7th group in the 08 data group was slow. The normal conversion rate is 20-30 times per minute, while this car only needs 5-6 times uniformly, indicating that there is a problem with the oxygen sensor. Repair consequence: Replace the oxygen sensor and clean up the problem. Problem analysis: This problem is caused by the contradiction between the air flow meter flag signal and the oxygen sensor flag signal displayed in the computer. In practice, it is due to the oxygen sensor being misaligned, resulting in mismediation. However, in terms of consequences, it is the same as the severe deviation of the air flow meter flag signal, w