I have a 1990 dodge dakota 3.9 liter v6...idles rough and stalls out at stopping...i have changed cap rotor plugs and wires...and also the throttle positioning sensor...no change..any ideas would be g I have a 1990 dodge dakota 3.9 liter v6...idles rough and stalls out at stopping...i have changed cap rotor plugs and wires...and also the throttle positioning sensor...no change..any ideas would be greatly appreciated...thanx

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Engine stalling and rough run issue at low speeds

This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control. If this doesn't improve the problem you have mechanical problems in the engine like a low cylinder die to worn rings or leaking valve seats.



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