Close

Ignition Coil

The ignition coil converts low battery voltage into the higher voltage needed to produce the spark that ignites the fuel in each cylinder.

Symptoms of a Bad or Failing Ignition Coil

  • The Check Engine Light may come on
  • The engine may run rough or stall
  • Lack of power on acceleration
  • The engine cranks, but will not start

Ignition Coil Related Repair Advice

  • Continuing to drive with the above mentioned symptoms can damage the catalytic converter
  • An engine can have a single ignition coil that covers all cylinders; one coil for each cylinder head of a V6 or V8 engine; one coil for every two cylinders (waste spark ignition); or one coil for each cylinder in the engine (coil-on-plug ignition)
  • On some vehicles, it may be necessary to remove the intake manifold to gain access to the ignition coils
  • A failed ignition coil can be the result of failures elsewhere in the ignition system. The ignition wires and spark plugs should be inspected and replaced if necessary.
  • Oil or coolant leaks can damage ignition coils—the leaks need to be repaired along with the ignition coil
  • Care should be taken when servicing the ignition system as up to 45,000 volts may be present while the engine is running

0 User Comments

Sign in to comment

Asset 71
HIGH QUALITY REPAIRS
Your auto repair done right, only the work you need with no add ons.
Asset 72
TRANSPARENT PRICING
Our free estimator calculates a custom price for your vehicle repair.
Asset 73
GUARANTEED REPAIRS
Rest easy knowing you're covered by our RepairPal Nationwide Warranty.