A coil pack is a group of ignition coils that plays a vital role in starting your vehicle. Ignition coils are heavy duty but excessive heat, vibration, and bad installation can damage them over time. When your coil pack fails, you’re bound to have issues starting your car. It’s a good idea to test your coil pack if you suspect that it needs to be replaced soon. Auto Parts … [Read more...] about How Do You Test a Coil Pack?