For something a little older (and a bit less organised), see https://www.oldcarm...

userbinator on May 19, 2024 | parent | context | favorite | on: Operation CHARM: Car repair manuals for everyone

For something a little older (and a bit less organised), see https://www.oldcarmanualproject.com/

That said, a lot of newer official service manuals don't really go into detail and just give instructions on how to disassemble and swap parts; better than no manual, but a huge contrast from older ones that would also include detailed theory of operation and troubleshooting information.

millzlane on May 20, 2024 [–]

This is how I learned to troubleshoot certain issues. The Chilton manual had a pretty good diagnosis section.