A Jetta FV7160CIFE3, mileage of 11450km. Low speed gear, throttle to 2000r / min or so to close the oil, the body moves around before and after.
    Maintenance process
    First with 1552 detection, did not find any fault information. On the throttle set after the test, the throttle when the failure still exists. Check the throttle, the throttle is not inflated and the angle is normal. Other possible causes of this failure are spark plug, fuel injector, speed signal, vacuum leak, etc., after a check did not find abnormal.
    At this time the only hope that only the control data flow to see the signal, from which to find some clues. When the data stream 66 group 2 area is checked, it is found that there is no change in the clutch signal. Take out the circuit diagram to check the corresponding circuit to find the car installed outside the anti-theft device, the installation of the headlamp switch below the main harness in the clutch switch line cut off after the re-connected. Analysis of the possible causes of the wire is broken, the clutch switch in the normally open state, the throttle added to 2000r / min when the throttle should be overspeed off the state, can be due to clutch switch normally open idling state, resulting in the phenomenon of jump car.
    Troubleshooting
    Connect the clutch switch circuit, troubleshooting.