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Hello. It seems the torque converter in your car is malfunctioning/defective; if your car has an automatic transmission. If your car has a manual transmission, the 'clutch', 'pressure plate' and 'throw-out bearing' must be removed and replaced. Malfunctioning torque converters for automatic transmission vehicles and clutches for manual transmission vehicles will cause them to 'jerk' while driving and 'stall' the engine because they won't engage and disengage like they are supposed to. Good luck and keep me informed; if you want to.
Jerking or cutting fuel supply? How did you determine that? This is most likely a sensor in the engine. Could be a fuel pump relay but it most likely is a crank shaft sensor.
Clean or replace the "Idle Air Control Valve" and use injector cleaner in your gas tank...STP super concentrated in the black bottle is proven...Hope this helps.
Do a compression check. It sounds like the valve timing. If the engine has had recent maintenance like tune ups, oil changes etc. the symptoms you describe indicate serious problems.
It sounds like you have a bad MAF (Mass Airflow Sensor). This is in your air inlet tube, pull this out and check to see if there is any corrosion on it. If is one that has a coiled exposed wire, then ensure that the wire is not broke.
Had same problem: cutting out at low rpm, jerking, a huge clunk or shudder at higher speed (like transmission was going out), and rough idle. All these symptoms were intermittent.
CHECK THE FUEL FILTER!! Changed the fuel filter and thing runs fine!!
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