Sources of free online auto repair instructions include AutoZone.com and FreeOnlineAutoRepair.com. AutoZone.com offers extensive online aids, including manuals, videos, troubleshooting guides, an automotive glossary and details about AutoZone's Loan-A-Tool program.
AutoZone.com provides auto repair instructions in the Repair Help section to members who sign up for a free account and log in. The Repair Help section features novice, intermediate and expert vehicle repair guides for many vehicle makes and models. A repair video library features videos in categories such as belt and hoses, drivetrain, lighting and tire repair, among others.
The troubleshooting tool allows members to specify symptoms to determine the cause of a problem, while the Product and How To Info section displays basic information about how various parts work and instructions on how to test or replace them. This website also features a user forum where people can ask questions and an automotive glossary.
FreeOnlineAutoRepair.com features repair guides for some components specific to particular vehicle makes and models, as well as more general instructions applicable to many makes and models. Some general instruction guides include How To Change Your Car's Fuel Pump, How To Change Your Car's Fuel Filter, and Your Fuel System. This website also features a user forum, an automotive glossary and a guide to automotive diagnostic codes.