auto

Top 10 check-engine-light car repairs

No. 4 car repair: Faulty ignition coil and spark plugs

Average repair cost: $316.58

Faulty spark plugs can cause problems with ignition coils. Ignition coils use the current from the battery to ignite the spark plugs. In addition to failures due to spark plug problems, ignition coils can malfunction due to high underhood temperatures and age.

Replacement costs increased by 6.6 percent over the previous year, but it may be covered under the powertrain warranty. This is another problem to be dealt with promptly. Ignition coil failures can cause other problems.

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