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Analysis of Two Cases of Fault Diagnosis of Ford Mondeo Throttle
Time£º2017-05-28 10:04:17 Source£ºUnknown The author£ºUnknown

Fault 1:
    Symptom: 2.0L displacement, exercise 10000km. Morning start the car in the step on the accelerator pedal feel boredom
    Troubleshooting: Pull line block. Because of the warranty period, we first for the car to replace the throttle pull line, but the problem has not been resolved, the throttle body removed and found inside the carbonized masonry, with a cleaning agent to clean the throttle, the fault disappeared.
    Fault Summary: Due to the use of vehicles in the process, the air filter through the small dust and the intake pipe at the subtle oil meet and adhere to it, in the long-term high temperature conditions gradually formed coke and some glues, which affected the Throttle action, so step on the accelerator pedal when it is more laborious.
    Fault two:
    Symptom: a Ford Mondeo 2.0L, driving 30000km. After the cold start, the engine jitter, serious when the flame, hot car normal.
    Troubleshooting: Mondeo car is equipped with a 4-cylinder multi-point injection of 16-valve engine, cold start after the jitter, the analysis may be cold fuel shortage. Due to cold start, the metal pipe and cylinder wall will be part of the fuel coagulation, there may be insufficient fuel supply. Therefore, during the engine hot car, it is necessary to supply the appropriate enriched mixture. The hot car thickening of the signal, mainly rely on the engine temperature sensor measured, and then passed the PCM calibration mixture ratio. Which is appropriate to extend the fuel injection time, so that it sprays more fuel, water temperature increases, that is to stop additional fuel injection. Assume that the engine temperature sensor failure, but after WDS detection, sensor conditions normal. Finally, the throttle body removed and found that the throttle body is dirty, resulting in a mixture of imbalance.
    Troubleshooting: After cleaning the throttle, adjust the throttle position sensor, the engine cold start to start the shaking failure to be resolved. Engine jitter, serious when the flame, hot car normal.
    Troubleshooting: Mondeo car is equipped with a 4-cylinder multi-point injection of 16-valve engine, cold start after the jitter, the analysis may be cold fuel shortage. Due to cold start, the metal pipe and cylinder wall will be part of the fuel coagulation, there may be insufficient fuel supply. Therefore, during the engine hot car, it is necessary to supply the appropriate enriched mixture. The hot car thickening of the signal, mainly rely on the engine temperature sensor measured, and then pass the PCM calibration mixture ratio, which is appropriate to extend the fuel injection time, so that it sprays more fuel, water temperature rises, that stop Additional fuel injection. Assume that the engine temperature sensor failure, but after WDS detection, sensor conditions normal. Finally, the throttle body removed and found that the throttle body is dirty, resulting in mixed gas system disorders.
    Troubleshooting: After cleaning the throttle, adjust the throttle position sensor, the engine cold start shaking failure to be resolved.