Volkswagen Passat New Lingyu inability to accelerate(1)

A auto diagnostic tool mileage about 60000km 10 Volkswagen Passat Passat 1.8T sedan. Reflects the proprietor: The car or truck accelerated weakness phenomenon. Driving the optimum speed barely capable of attain 130 km / h, but overtaking capacity is poor. Engine fault indicator and EPC lights are certainly not lit.

Pick-up: To start with failure phenomenon to confirm. Commence the engine, engine fault indicator and EPC lights are lit, depress the accelerator pedal, the maximum engine speed in 3 800 r/min-3 900 r / min (Figure 1), that is regular since the vehicle has The speed limit function, that is definitely, in the situation of no-load, depress the accelerator pedal, the engine speed does not exceed 4 000 r / min. But naturally really feel the engine speed to boost the slow rising.

Connect the Auto Diagnostic Tool VAS 5052 to the engine control unit, read fault codes P1297 and P0299, the that means with the fault code. Attempt to clear the fault code is often cleared. The re-commissioning, the acceleration efficiency is worse, thereby determining the car fault does exist, as the engine should the engine handle unit identified defective. Will produce a fault code. Then emergency "limp mode" to handle the engine running when the fault code is cleared. The engine manage unit will re-use the data signals with the various sensors, although many of the sensor signal value is not usual, so the car diagnostic tools acceleration effectiveness might be even worse. See 002 and 033 in the data stream, the meaning of every set of data streams and described as follows.

002 group information streams:
The regular value for your engine speed on the line 1 (idling 720 r/min-900 r / min); The second line with the load around the engine (the idle regular values for 12% -28%); Line 3 injector (idle typical time of 1 ms-4 ms); Traveling 4 the gasoline (the the idle ordinary value 2g/s-4g/s).

033 sets of data flow: The correction value on the oxygen sensor with the 1st row (the usual idling -25% -25%, this value is less than 0, indicating that the partial 自動車整備工具 concentration in the gasoline mixture; this worth higher than 0. Said mixed fuel partial thinning);