Step 1: according to the owner’s description, when the vehicle is driving, sometimes step on the clutch or emergency brake, the car will automatically shut down, turn the key to off, and then restart the car. The car can start immediately, with good power and no impact Stalling Often.
Step 2: plug in the decoder and read the current fault with the decoder. The fault code is p0336 and the signal of crankshaft position sensor is not credible.
Step 3: start the fire in place, step on the brake or clutch, and the car does not stop. Then read the fault code again, and the fault code will be cleared automatically. Check the historical fault, and there is no historical fault stalling often.
Step 7: replace the new crankshaft signal sensor and crankshaft oil seal. The car has been tested in place and on the road for many times, and there is no flameout again. The system is also normal with the decoder and there are no fault codes stalling often.
Tip: the crankshaft signal sensor signal is not credible, which will affect the synchronization and cause the intermittent flameout of the car. If conditions permit, the voltage waveform can be measured by oscilloscope. The correct voltage waveform is shown in the figure below stalling often: