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Q: Car keeps stalling and there is a pulling feeling when driving

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Ok yesterday I got a tune up and an oil change now today my car keeps stall out when I go to step on the gas and it shaking plus there a pulling like it don't want to go while driving. What can this be

My car has 171052 miles.
My car's transmission is unknown to me.

A: This is a common sign of a failing throttle...

This is a common sign of a failing throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of a vehicle. The sensor is usually located on the butterfly spindle/shaft so that it can directly monitor the position of the throttle. This sensor relays the position of the throttle plate (also called the butterfly) relative to your foot's position on the gas pedal and associates the two in the ECU.

The ECU then makes the direction to supply more or less fuel to the motor. When this sensor is not working properly, this can cause intermittent responses when applying the gas pedal. This may also be a failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the motor. When this fails, this can cause an imbalanced air/fuel load to be supplied to the motor which often times results in the engine starving for air or fuel.

This is what causes the hesitation or loss of power you describe. This can also cause the engine to struggle to idle for the same reason. I would suggest having a professional from YourMechanic come to your home to diagnose and replace this sensor.

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