Car Problem Reports

Subaru Impreza WRX STI Improved Spark Plug Wires for Misfire Issues

Subaru Impreza WRX STI Problem
7 Reports
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Model Years Affected: 2004, 2005, 2006, 2007, 2008, 2009, 2010


Sometimes the Check Engine Light illuminates because the computer detects misfires. Subaru released an improved spark plug wire set to solve the problem. The ignition coil should also be inspected for carbon tracks or short circuits between the contacts.

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