The Volkswagen Bora auto diagnosis mileage of about 90,000 km, equipped with 01M automatic transmission 2009 Volkswagen Bora cars. Users reflect the car accelerated weakness.
Pick-up: the maintenance staff commissioning, and found the car to accelerate slow engine speed increases to more than 3 000 r / min, the transmission to shift into 3 block. This is obviously not normal.
First, check obd2 scanner the engine torque control situation. Through the stall test and found that only 1 700 r / min, the stall speed of the engine is significantly lower. Detecting an engine control unit, the fault code. But check fuel correction amount, partial concentration of the mixture in the fuel injection correction. Engine idling view 01-08-005 set of data, air flow rate of 4.2 g / s, calculate the air flow parameters, flow rate of only 2.3 g / s. Since the air flowmeter measurement of the intake airflow in high error exists, so when the engine obd2 scan tool output torque is increased, the fuel injection quantity is beyond the correction range, so that the mixture is too thick and cause engine overload. In the case of high rate of engine load, the transmission had to be postponed shift, this is a trial run to see the failure phenomenon.
Troubleshooting: Replacing obd2 code reader the air flow meter, troubleshooting.
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