Originally Posted by phil alvirez

lets start with the camshaft sensor.
1-what it senses?
i guess: wear of the camshaft?
or wear of the gear that couples to the crankshaft gear?
2-how? .
3-and why it dies-especially in a way that we are not prepared? no warnings? shouldnt it send sort of warning?
or are there tools/procedures that may help us to check something and change them before they suddenly die?
there are videos explaining about its design and how it works, so we have an idea, but still there are questions that are not answered.
an example: https://www.youtube.com/watch?v=9DirjbUJKXE