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As the new generation of vehicles begins coming into aftermarket shops, professionals will begin selling more variable valve timing components.
Bad diodes are a common cause of alternator failure. The diodes are part of the rectifier assembly that converts the alternator’s AC output to DC. The alternator’s charging output flows through six diodes in the rectifier assembly before it goes to the battery and electrical system.
Assuming normal maintenance has been performed, radiator service should take place after most of them fail, which is around 100,000 miles of service.
Maintenance aerosol products include everything from penetrating lubricants and surface protectants to various types of cleaners, glass and tire treatments.
To help maintain cash flow in the slower months, independent shops replace worn engines, which require inspection and possible replacement of engine mounts.