2004 Ford Taurus Dohc 3.0 How To Test Coil Pack Or Missing At Idle And Part Acceleration?


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The Taurus was an innovative car brought to market by Ford in 1986. In production for over two decades, it is currently one of the oldest running models in the USA, and is also the fifth best selling car for Ford in North America.

The 2004 Taurus is part of Ford's redesigned fourth generation of the model. Modifications include increased trunk space, and a more conventional design to the car's shape, including a higher roof and more upright shape to the rear.

Testing a Ford Taurus's coil pack is relatively straightforward.

  • Firstly, open the hood and remove the negative battery cable from the battery.
  • Find the coil pack on the driver's side of the engine, and put masking tape around the end of each spark plug wire.
  • With some caution, mark the spark plug wires to the match up with the numbers on the top of each coil pack. Remember, each coil pack will have two spark plugs attached, as well as another two numbers etched onto the top of the coil pack.
  • Remove the two spark plug wires from one of the coil packs, and place the positive /red end of an ohmmeter needle onto the side of the coil etched with a '+' symbol.
  • Similarly, place the negative/black needle onto the coil etched with a '-' symbol. You must make sure that you have metal to metal contact, or else you will not receive a reading on the ohmmeter.
  • Note down your reading from the ohmmeter, and measure this against the resistance requirements for the secondary coil. This should be between 12.8 and 13.1 ohms. If the reading does not meet or exceeds this, you should replace your coil pack.
  • Repeat the above steps for your second and third coil packs.
Please note, if you find all your results come outside the required reading of 12.8 and 13.1 ohms, you will need to replace the whole coil module.

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