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SOUNDS LIKE THE FIRST STAGES OF AN ELECTRIC FUEL PUMP FAILING. THEY ARE NOTORIOUS FOR THESE TYPES OF SYMPTOMS. THE LOW PRESSURE AT THE TRAFFIC LIGHT RESULTS IN THE STALL, BUT AS LONG AS ITS UNDER DEMAND IT WILL FUNCTION OK UNTIL IT QQUITS. HAVE A PRESSURE CHECK DONE ON THE FUEL PUMP
It sounds like there is a problem with the Idle Air Control (IAC) valve. Its job is to open and let air into the manifold when the throttle is closed at idle. If it does not open, the engine dies at idle. The IAC is mounted on the throttle body. Possibly the valve is clogged or stuck, in which case it could be ok again if it is removed and cleaned. Or it is broken, and needs to be replaced. Or, there is a problem with its electrical connection, that needs to be traced. Good luck, let me know if you have any questions.
it look like a mass air flow sensor the sensor that goes in the air filter usual sentra symtom no power stall when realesing the gas pedal pierre p.s go to a wreaker scrap yard bye the piece it will work