How to Replace Ignition Coils on Ford Windstar?

The details to replace ignition coils are as follows:---

Ignition Coils
INSPECTION
REMOVAL & INSTALLATION
TESTING

The instructions for all this are mentioned below: ----

Inspection

1. Turn the ignition OFF .
2. Disconnect the negative battery cable.
3. Disconnect the wiring harness from the ignition coil. 
   
   
   
   Fig. Ignition coil pack terminal designations
   
   
   
   

   

   Fig. The ignition coil is connected to the vehicle wiring harness with a four terminal plug
4. Check for dirt, corrosion or damage on the terminals and repair as necessary.

Removal & Installation

1. Disconnect the negative battery cable.
2. Disconnect the electrical harness from the coil pack.
3. Label and remove the spark plug wires from the ignition coil terminal towers. To remove the wires, squeeze the locking tabs to release the coil boot retainers.
4. Remove the coil pack mounting screws and remove the coil pack.
   
   
   

   

   Fig. Ignition coil pack mounting-3.0L engine
   
   
   
   

   

   Fig. Ignition coil pack mounting-3.8L engine
   
   
   
   

   

   Fig. The coil pack is attached to a bracket with four small bolts
   
   
   
   

   

   Fig. The coil pack contains the coils and the ignition control module. It is removed as an assembly

To install:

1. Install the coil pack and the retaining screws. Tighten the retaining screws to 44-61 inch lbs. (5-7 Nm).
   
   NOTE

   Lubricate the terminals with dielectric compound prior to installing the spark plug wires.
2. Connect the spark plug wires and electrical harness to the coil pack.
3. Connect the negative battery cable.

Testing

1. Measure coil primary resistance between ignition coil pin 4 (B+) and pins 1 (coil 2), 2 (coil 3) and 3 (coil 1).
2. Resistance should be 0.3-1.0 ohms.
   
   
   

   

   Fig. Testing the coil primary resistance using a multimeter
3. Measure coil secondary resistance between ignition coil terminals and their corresponding spark plug wire towers on the coil.
   
   
   

   

   Fig. Testing the coil secondary resistance between the ignition wire terminals
   
   
   
   Pin 3 (coil 1)-spark plugs 1 and 5

   Pin 2 (coil 3)-spark plugs 2 and 6

   Pin 1 (coil 2)-spark plugs 3 and 4
4. Resistance should be 12.8-13.1 kilohms.
5. If either primary or secondary resistance is not within specification, the coil may be faulty.

This details will help.

Thanks.

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Car repair guide?

http://technoanswers.blogspot.in/2012/03/car-repair-guide.html