Question about 2001 Ford Super Duty F 450
Spit & sputters in rain & very cold weather and will stall at idle in rain
have fuel injection system cleaned
Posted on Oct 03, 2009
Testimonial: "Thank you for the quick reply. This was one of my first thoughts along with possibility of a blocked fuel filter, fuel pump, or plugs/coil connectors."
LEAKING BAD SPARK WIRES OR YOUR COIL PACK GETTING DAMP.IF YOU HAVE 3.0L ENGINE. COIL PACK ON BACK OF ENGINE.IF YOUR LOWER COWL SEAL IS MISSING WATER CAN RUN DOWN THE COWL WHERE SEAL SUPPOSE TO BE CAUSING WATER TO RUN BACK OF ENGINE DAMPING YOUR COIL AND WIRES.BAD PLUG WIRES WILL CAUSE PROBLEM WHEN IT RAINS.
Posted on Jan 24, 2010
Will it stay running if you keep your foot on the gas? If yes it sounds like you might have a bad Idle air control motor.
Posted on Mar 30, 2010
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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
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