Polo 1.4L engine flameout normal driving the car does not start

        Symptom: a 2003 factory Polo 1.4L sedan, suddenly unable to accelerate normal driving, the engine stalled and then did not start.
        Check Analysis: rescue personnel arrived at the scene after starting the engine test, the engine smooth start, but found EPC lights on the dashboard lights. Understand that the car two days ago because of EPC lights, and replace the intake manifold super mb star c3 absolute pressure sensor. Remove the intake manifold absolute pressure sensor inspection also found no sludge and limb things like quality, so the two days before the change over from the old sensor cleaned and loaded on to clear the fault code, after starting the engine light is no longer found in EPC lit, test also everything is normal, then believed to be caused by poor quality of the new pieces of crystal. But after a day and a call to the owner, and air conditioning systems without anti fault code storage. Analysis guide the car and can not reflect accelerated engine flameout can not start the machine again. After the car towed back to the factory connection failure detector test, also show the intake manifold absolute pressure sensor failure, after clearing the fault code test, the engine has returned to normal. PCV valve is sometimes suspected of being a bad job, but because of the crankcase ventilation is not very good split, so decided to carry out regular checks. After inspection, petrol pressure, spark plugs, ignition coils, throttle, vacuum tube so normal. Road test on the car over 0.5h, the fault does not reproduce. The relevant lines and electrical components were checked and found particularly hot pump relay.
        To determine the cause of the malfunction, continue to road test the car 5 km, heat pump renault diagnostic tool relay, it seems not the relay itself, check the fuel pump and lines, the line properly, it seems the fuel pump may be a problem, remove the check the fuel pump, filter found below a layer of dirt has been blocked.
        The original fuel pump is overworked, causing the pump relay heat, eventually disconnected, when the car cool while the relay is to resume normal work, the car can work properly. Since the fuel system pressure is not enough, resulting in a sudden thinning the mixture, so the engine electronic control unit stores the camp on the intake manifold absolute pressure sensor failure fault code, and lit the EPC lights.
        Remedy: Replace the fuel pump.
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