Before you begin:
* Disconnect the negative battery cable. This is crucial to prevent electrical shock and accidental short circuits.
* Consult a repair manual specific to your E-150's engine. A Haynes or Chilton manual will provide diagrams and detailed instructions. This is highly recommended to avoid damaging components.
General Steps:
1. Locate the Ignition Coil: The ignition coil is usually mounted on the engine, near the distributor (if equipped) or directly on top of the spark plug tubes (more common in later models, but could be the case for your 1995). It's a relatively small, rectangular or cylindrical component.
2. Disconnect the Ignition Coil Wires: There will be several wires connected to the coil. These are usually held in place by clips or screws. Carefully disconnect each wire, noting where each one goes. Take pictures if you're unsure. You'll likely find a low-voltage wire from the ignition system and high-voltage wires leading to the distributor (if equipped) or spark plug wires.
3. Remove the Coil Mounting Hardware: The coil is usually held in place by one or two bolts, screws, or clamps. Carefully remove these fasteners.
4. Remove the Ignition Coil: Once the fasteners are removed, the coil should come off relatively easily. Be gentle to avoid damaging the coil or surrounding components.
5. Inspect the Coil: Once removed, visually inspect the coil for any cracks, damage to the wires, or corrosion.
Important Considerations:
* Distributor (if equipped): If your E-150 has a distributor, the ignition coil is usually mounted on or near it. The high-voltage wires connect to the distributor cap.
* Spark Plug Wires: If your E-150 has individual coil-on-plug (COP) ignition, each spark plug will have its own coil. In that case, you'll remove the individual coil from the spark plug.
* Engine Type: The exact location and mounting method will vary slightly depending on the engine. Your repair manual is critical here.
If you are uncomfortable working on your vehicle, take it to a qualified mechanic. Improperly handling electrical components can be dangerous. This guide provides general steps; consult your repair manual for specific instructions related to your vehicle's engine.
